Evaluating the expression
I'm looking at the expression: 100 − (50 − 38) − (25 + 13). There's something interesting here regarding a faint circle around the handwritten "3" above 100, which seems to indicate that it’s part of step 3. Maybe that marking is a cue for solving or clarifying part of the equation? It's like there’s a mini note telling me to pay attention to that "3." Now, I just need to assess what that means for the calculation!Clarifying number placement
I see that I need to focus on the sequence of operations, especially for "порядок действий" which indicates left to right for same-priority operations. The user seems to want me to place order numbers in circled marks above the operations rather than just solving the equations. I should also consider if "знаки" means "signs" related to operations. It looks like I need to clarify the principles of parentheses and the order of operations in my explanation!Clarifying operation order
I’m thinking about how to convey the expected order of operations for the user, which might relate to what the teacher indicates. If the teacher expects order based on parentheses, the operations can be done differently without causing confusion. I'm inspecting the annotations and noting they may only place numbers to mark certain operations. But wait, when counting these operations, there are more than three. I guess I need to recalculate the expression again.Inspecting operation labeling
I'm realizing there are two main operations, but it seems they number all four. Maybe I see faint numbers handwritten over the minus signs. I need to explore the coordinates systematically, especially from the image. The top line text is around a y-coordinate of 160. Observing the rendered image, there’s a circle marked "3" near the first minus after 100. And at other coordinates, I notice circles indicating numbers related to the operations, but I’m not sure how to confirm that fourth one.Mapping operation details
I'm examining the visible image closely now. After the number 38 and the closing parenthesis, I see a minus sign and then the expression (25 + 13). It looks like there's a pencil circle around the number "2" above the plus sign. I’m unsure about the "4," though. Maybe the number "3" actually marks the second subtraction instead of the first? I should measure the lengths accurately, especially with the text "100 - (50 - 38) - (25 + 13)=" to clarify everything.Analyzing math order
I'm looking at a math sequence: \(6·4\), \(3·8\), \(24+24\), \(70−69\), and \(48:1\). A nuanced point arises in line 3 regarding the order of operations. Since \(70−69\) is in parentheses, it can be calculated in either order, but strictly left-to-right, it comes after the numerator. Is \(70-69\) considered lower priority than addition? Each part is in parentheses. It's interesting to consider if the denominator subtraction is step 1 based on order.Analyzing mathematical expression order
I’m breaking down the mathematical expression, starting with the parenthetical components like (6·4 + 3·8):(70-69). I list operations within the parentheses, ensuring clarity in how I calculate. It's important to consider the conventional order of operations, which usually follows left to right. Although using left-to-right order isn't mandated, it's common practice. If there are different valid approaches, teachers might expect a specific one, so I need to clarify these rules.Clarifying order of operations
For the expression (6 · 4 + 3 · 8) : (70 − 69), I need to follow the order of operations. This means tackling actions in brackets first, and within those brackets, multiplication and division come before addition and subtraction. I'll list the calculations clearly. When adding or subtracting, I’ll move from left to right. I also think I should include a check of my results to confirm accuracy. It's essential to be concise and clear with the final formatting.
Краткий ответ: ответы: 50, 65, 48.
Номера действий ставь над соответствующими знаками.
1) \(100-(50-38)-(25+13)\)
- \(50-38=12\)
- \(25+13=38\)
- \(100-12=88\)
- \(88-38=50\)
Ответ: \(50\).
2) \(27+(9\cdot6-25)+72:8\)
- \(9\cdot6=54\)
- \(54-25=29\)
- \(72:8=9\)
- \(27+29=56\)
- \(56+9=65\)
Ответ: \(65\).
3) \((6\cdot4+3\cdot8):(70-69)\)
- \(6\cdot4=24\)
- \(3\cdot8=24\)
- \(24+24=48\)
- \(70-69=1\)
- \(48:1=48\)
Ответ: \(48\).
Правило: сначала действия в скобках, затем умножение и деление, потом сложение и вычитание. Действия одного уровня выполняют слева направо.