Question

Evaluate 2a-5b-3a for a=-2 and b=5
a. -23
b. 27
c.-35
d-15

Answer 1

put the numbers given accordingly in the equation

bracket means multiply
2(-2)-5(5)-3(-2)
=-4-25+6
=-23

a. -23

Answer 2

a. -23

Explanation:

2a-5b-3a

The first step is combine terms

-a -5b

a = -2 ad b=5

-(-2) -5(5)

+2 -25

-23