The solution to 7(3)+2(-8) is 5

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7(3)+2(-8)

Solution

7 (3) + 2 (- 8)

5

Solution steps

7 (3) + 2 (- 8)

Follow the PEMDAS order of operations

Multiply and divide (left to right)

7 (3) : 21

7 (3)

Apply rule:

(a) = a

(3) = 3

= 7 \cdot 3

Multiply the numbers:

7 \cdot 3 = 21

= 21

= 21 + 2 (- 8)

Multiply and divide (left to right)

2 (- 8) : - 16

2 (- 8)

Apply rule

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

2 (- 8) = - 2 \cdot 8 = - 16

= - 16

= 21 - 16

Add and subtract (left to right)

21 - 16 : 5

21 - 16

21 - 16 = 5

= 5

= 5

(- 7)^{2} + 10 (- 7) + 21

8 - 6 \cdot 4 + 10 \div 2

3 - 2 - 6

8 \times 5 + 8

\frac{6}{3 ( 2 + 1 )}