What is -2[6(-5)-(-7-4)-(2)]\div (-1)^2 ?

The solution to -2[6(-5)-(-7-4)-(2)]\div (-1)^2 is 42

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-2[6(-5)-(-7-4)-(2)]\div (-1)^2

- 2 [6 (- 5) - (- 7 - 4) - (2)] \div (- 1)^{2}

42

Solution steps

- 2 [6 (- 5) - (- 7 - 4) - (2)] \div (- 1)^{2}

Follow the PEMDAS order of operations

Calculate within parentheses

[6 (- 5) - (- 7 - 4) - (2)] : - 21

= - 2 (- 21) \div (- 1)^{2}

Calculate exponents

(- 1)^{2} : 1

= - 2 (- 21) \div 1

Multiply and divide (left to right)

- 2 (- 21) \div 1 : 42

= 42

2^{2} \cdot 3 \cdot 5

(2 \times 5) + 2 - [3 - (1 \times 3 - 5) + 1]

- 1^{2} + 2 + 0

5 \times 0 - 2

3 + 2 \times 5 - 4^{2}

What is -2[6(-5)-(-7-4)-(2)]\div (-1)^2 ?
The solution to -2[6(-5)-(-7-4)-(2)]\div (-1)^2 is 42