Question

what is the value of x. 2.5(x-9)=8
A. -12.2
B. -6.8
C. 6.8
D.12.2

Answer 1

The answer would be D) x = 12.2.

Divide both sides by 2.5 ( x - 9 = 8/2.5)

Simplify 8/2.5 to 3.2 ( x - 9 = 3.2 )

Add 9 to both sides ( x = 3.2 + 9)

Simplify 3.2 + 9 to 12.2. (x = 12.2)