What is (12-7-8+1)\times (-2) ?

The solution to (12-7-8+1)\times (-2) is 4

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(12-7-8+1)\times (-2)

(12 - 7 - 8 + 1) \cdot (- 2)

4

Solution steps

(12 - 7 - 8 + 1) (- 2)

Follow the PEMDAS order of operations

Calculate within parentheses

(12 - 7 - 8 + 1) : - 2

12 - 7 - 8 + 1

Add and subtract (left to right)

12 - 7 = 5

= 5 - 8 + 1

5 - 8 = - 3

= - 3 + 1

- 3 + 1 = - 2

= - 2

= - 2 (- 2)

Multiply and divide (left to right)

- 2 (- 2) : 4

- 2 (- 2)

Apply rule

- a \cdot (- b) = a \cdot b

- 2 (- 2) = 2 \cdot 2 = 4

= 4

= 4

- \frac{1}{2} \times 2 - 1

(1 - 3)^{2} - 2

- 2 (5)^{2}

1 \div \frac{1}{2} + \frac{1}{7}

2^{8} \times 15 + 2^{8}