Question

7+(-8)-(-12)-(-7)+12-30=

Answer 1

Пошаговое объяснение:

- на - даёт +

тогда

7-8+12+7+12-30

7-8=-1

-1+12=11

11+7=18

18+12=30

30-30=0

ответ = 0

Answer 2

To solve this arithmetic expression, let's simplify it step by step:

7 + (-8) - (-12) - (-7) + 12 - 30

First, we simplify the negation signs:

7 + (-8) + 12 + 7 + 12 - 30

Next, we perform addition and subtraction from left to right:

(-8) + 7 = -1 (-1) + 12 = 11 11 + 7 = 18 18 + 12 = 30 30 - 30 = 0

Therefore, the result of the expression 7 + (-8) - (-12) - (-7) + 12 - 30 is 0.