What is -8\times (-10)-7\times 1/(-1) ?

The solution to -8\times (-10)-7\times 1/(-1) is 87

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-8\times (-10)-7\times 1/(-1)

- 8 \cdot (- 10) - 7 \cdot \frac{1}{- 1}

87

Solution steps

- 8 (- 10) - 7 \cdot \frac{1}{- 1}

Simplify

\frac{1}{- 1} : - 1

Apply the fraction rule:

\frac{a}{- b} = - \frac{a}{b}

= - \frac{1}{1}

Apply rule

\frac{a}{1} = a

= - 1

= - 8 (- 10) - 7 (- 1)

Follow the PEMDAS order of operations

Multiply and divide (left to right)

- 8 (- 10) : 80

- 8 (- 10)

Apply rule

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

- 8 (- 10) = 8 \cdot 10 = 80

= 80

= 80 - 7 (- 1)

Multiply and divide (left to right)

7 (- 1) : - 7

7 (- 1)

Apply rule

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

7 (- 1) = - 7 \cdot 1 = - 7

= - 7

= 80 - (- 7)

Add and subtract (left to right)

80 - (- 7) : 87

80 - (- 7)

Apply rule

- (- a) = + a

- (- 7) = + 7

= 80 + 7

80 + 7 = 87

= 87

= 87

9 0^{2} + 9 0^{2}

- 4 + (- 1) - (- 3)

5 - 2 (3 - 6 \cdot 4 - (5 - 24 \div 3 \cdot 4))

2 (1) - (- 3)

8 - (1 - 12) - [(- 6) - 4]

What is -8\times (-10)-7\times 1/(-1) ?
The solution to -8\times (-10)-7\times 1/(-1) is 87