Question

Решите примеры 1.-3*(72-18) 2.6*(25-131) 3.(31-12)*(32-64) 4.91-108+13-49

Answer 1

ДАНО:
1) – 3 • (72 – 18)
2) 6 • (25 – 131)
3) (31 – 12) • (32 – 64)
4) 91 – 108 + 13 – 49

РЕШЕНИЕ:
1) – 3 • (72 – 18) = – 3 • 54 = – 162 = ОТВЕТ.
2) 6 • (25 – 131) = 6 • (– 106) = – 636 = ОТВЕТ.
3) (31 – 12) • (32 – 64) = 19 • (– 32) = – 608 = ОТВЕТ.
4) 91 – 108 + 13 – 49 = 104 – 157 = – 53 = ОТВЕТ.

Answer 2

Sure, let's solve the expressions one by one:

1. 1 - 3 * (72 - 18) First, evaluate the expression inside the parentheses: 72 - 18 = 54 Now, substitute the result back into the expression: 1 - 3 * 54 Next, perform the multiplication: 1 - 162 Finally, perform the subtraction: -161

   So, the result is -161.

2. 6 * (25 - 131) First, evaluate the expression inside the parentheses: 25 - 131 = -106 Now, substitute the result back into the expression: 6 * -106 Perform the multiplication: -636

   So, the result is -636.

3. (31 - 12) * (32 - 64) First, evaluate the expression inside the first parentheses: 31 - 12 = 19 Next, evaluate the expression inside the second parentheses: 32 - 64 = -32 Now, substitute the results back into the expression: 19 * -32 Perform the multiplication: -608

   So, the result is -608.

4. 91 - 108 + 13 - 49 Perform the subtraction and addition operations from left to right: 91 - 108 = -17 -17 + 13 = -4 -4 - 49 = -53

   So, the result is -53.

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