18,25 - (9 - 3:7•(+ ½+30)) 4 (102 + 18 • 36) • (5 • 37 + 755) : 141 - 4000 Вариант 2 1 (247: 8 - 15: 7}) 9 - 1₴ 2 16 - 62 3 • (365 : 12-20 : 73 3 10・（48g： 12-20:63）-1g0 4 (8⅔…

Let's solve the provided mathematical expressions step by step.

Вариант 1

1. Expression: \( 18.25 - (9 - 3:7 \cdot (+ \frac{1}{2} + 30)) \)

   First, we evaluate \( 3:7 \): \( 3:7 \) means \( \frac{3}{7} \).

   Next, solve \( +\frac{1}{2} + 30 \): \( \frac{1}{2} + 30 = 30.5 \).

   Now compute \( 3:7 \cdot 30.5 \): \( \frac{3}{7} \cdot 30.5 = \frac{3 \cdot 30.5}{7} = \frac{91.5}{7} = 13.07142857 \) (approximately).

   Then, substitute into the main expression: \( 18.25 - (9 - 13.07142857) = 18.25 - (-4.07142857) = 18.25 + 4.07142857 = 22.32142857 \) (approximately).

2. Expression: \( \frac{(102 + 18 \cdot 36) \cdot (5 \cdot 37 + 755)}{141} - 4000 \)

   Compute \( 18 \cdot 36 = 648 \). So \( 102 + 648 = 750 \).

   Next, compute \( 5 \cdot 37 = 185 \). Thus, \( 185 + 755 = 940 \).

   Now, substitute these into the expression: \( \frac{750 \cdot 940}{141} - 4000 \).

   Calculate \( 750 \cdot 940 = 705000 \).

   Next, divide by 141: \( \frac{705000}{141} \approx 4992.92 \).

   Finally, \( 4992.92 - 4000 \approx 992.92 \).

Вариант 2

1. Expression: \( \frac{(247:8 - 15:7)}{9} - 1\)

   Evaluate \( 247:8 = 30.875 \) and \( 15:7 \approx 2.142857 \). Now simplifying: \( 30.875 - 2.142857 \approx 28.732143 \). Now divide by 9: \( \frac{28.732143}{9} \approx 3.1924 \).

   Finally, subtract 1: \( 3.1924 - 1 \approx 2.1924 \).

2. Expression: \( 16 - 62 \)

   Direct computation gives: \( 16 - 62 = -46 \).

3. Expression: \( \frac{(365:12 - 20:73)}{3} \)

   Calculate: \( 365:12 \approx 30.41667 \) and \( 20:73 \approx 0.27397\). Therefore, \( 30.41667 - 0.27397 \approx 30.1427 \).

   Now divide by 3: \( \frac{30.1427}{3} \approx 10.04757 \).

4. Expression: \( 10 \cdot (48g:12 - 20:63) - 1g0 \)

   This seems to contain "g" as a variable. Please clarify what "g" refers to.

5. Expression: \( (8 \frac{2}{3} + 5 \cdot 1k - 10:23): (82 - 53) \)

   Evaluate: Compute \( 82 - 53 = 29 \).

   Need clarification on "k", then compute the whole expression.

Вариант 3

1. Expression: \( \frac{5.632:0.11 + 4.256:1.12 - (52.4 + 0.39:0.15)}{1} \)

   This requires calculations for division and subtraction.

   Compute \( 5.632:0.11 = 51.1 \) and \( 4.256:1.12 = 3.8 \). Now compute \( 0.39:0.15 \approx 2.6 \).

   Final result from this, please clarify if each value needed or just the overall answer.

2. Expression: \( \frac{(10 \frac{2}{3} - 0.405 + k \cdot 22)}{5.51} + 2 - 4.5\)

   Same rule, calculate stepwise and indicate clear components for "k".

3. Expression: \( (20.3 - 18.13) \cdot 4.3 + \frac{(0.1614 + 0.5421)}{0.67} \)

   Needs detail to compute component parts.

4. Expression: \( 0.9:3 + 17.85:3 - (5 \frac{2}{3} - 3k) - 63 \)

   Likewise demands breakdown for all calculations.

Вариант 4

1. Expression: \( \frac{(x + 0.4 + 0.3 \cdot 5)}{75} \)

   Ensure values for each parameter.

2. Expression: \( \frac{(125 - 64 + 128 \cdot 75)}{800 \cdot 5000} - (300 - 400 + 5107 \cdot 800): 70 \)

   Further breakdown from the above.

3. Expression: \( \frac{2.6 + \frac{4 \frac{2}{3} + 0.15}{3}}{1} \)

   Refine based on component values.

Please provide clarification on any ambiguous sections, notably parameters associated with each mathematical variable like “g”, “k”, or terms that seem unspecified.