What is -10(+2)+(-5)+(+4)-(-20) ?

The solution to -10(+2)+(-5)+(+4)-(-20) is -1

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-10(+2)+(-5)+(+4)-(-20)

- 10 (+ 2) + (- 5) + (+ 4) - (- 20)

- 1

Solution steps

- 10 (2) + (- 5) + (4) - (- 20)

Follow the PEMDAS order of operations

Multiply and divide (left to right)

- 10 (2) : - 20

- 10 (2)

Apply rule:

(a) = a

(2) = 2

= - 10 \cdot 2

Multiply the numbers:

- 10 \cdot 2 = - 20

= - 20

= - 20 + (- 5) + (4) - (- 20)

Add and subtract (left to right)

- 20 + (- 5) + (4) - (- 20) : - 1

- 20 + (- 5) + (4) - (- 20)

Apply rule

+ (- a) = - a

+ (- 5) = - 5

= - 20 - 5 + (4) - (- 20)

- 20 - 5 = - 25

= - 25 + (4) - (- 20)

- 25 + (4) = - 21

= - 21 - (- 20)

Apply rule

- (- a) = + a

- (- 20) = + 20

= - 21 + 20

- 21 + 20 = - 1

= - 1

= - 1

3^{2} \cdot 2^{3} - (- 7)^{2} - (- 3) (- 5)

8 \times 12 \div (30 - 6)

\frac{2}{8} (- 2) - \frac{5}{2}

2 - 3 + 4 - 9

- [\frac{6}{5} \div \frac{9}{10}]