Question

Evaluate the expression
when a=4 and b = -4
2b-a

Answer 1

- 12

Explanation:

a = 4

b = - 4

2(- 4) - 4

- 8 - 4

Subtract 4 is the dame as adding its opposite which is - 4.

- 8 + (- 4)

= - 12

Hope this helps :)

Answer 2

Substitute A and B into equation:
2(-4) - (4)
=-12
:)