6.80-(24-6) 90-(36-8) 48 + (13 + 7) 34 + (18 + 2) 89-(64-4) 75-(37-7)

Let's solve each expression step-by-step. 1. **First Expression:** \(6.80 - (24 - 6)\) - Calculate the parentheses first: \(24 - 6 = 18\) - Now substitute this back in: \(6.80 - 18 = -11.20\) 2. **Second Expression:** \(90 - (36 - 8)\) - Calculate the parentheses first: \(36 - 8 = 28\) - Now substitute this back in: \(90 - 28 = 62\) Now we have the results for the first two expressions: - \(6.80 - (24 - 6) = -11.20\) - \(90 - (36 - 8) = 62\) Next, let's move to the third expression: 3. **Third Expression:** \(48 + (13 + 7)\) - Calculate the parentheses first: \(13 + 7 = 20\) - Now substitute this back in: \(48 + 20 = 68\) 4. **Fourth Expression:** \(34 + (18 + 2)\) - Calculate the parentheses first: \(18 + 2 = 20\) - Now substitute this back in: \(34 + 20 = 54\) Now we have the results for the next two expressions: - \(48 + (13 + 7) = 68\) - \(34 + (18 + 2) = 54\) Now let's solve the last two expressions: 5. **Fifth Expression:** \(89 - (64 - 4)\) - Calculate the parentheses first: \(64 - 4 = 60\) - Now substitute this back in: \(89 - 60 = 29\) 6. **Sixth Expression:** \(75 - (37 - 7)\) - Calculate the parentheses first: \(37 - 7 = 30\) - Now substitute this back in: \(75 - 30 = 45\) Now we have the results for the last two expressions: - \(89 - (64 - 4) = 29\) - \(75 - (37 - 7) = 45\) To summarize all the results: - \(6.80 - (24 - 6) = -11.20\) - \(90 - (36 - 8) = 62\) - \(48 + (13 + 7) = 68\) - \(34 + (18 + 2) = 54\) - \(89 - (64 - 4) = 29\) - \(75 - (37 - 7) = 45\)