Crystal861 Crystal861

02-09-2020
Mathematics

contestada

I will give the brainiest

Suppose x = 7 is a solution to the equation 4x - 2(x + a) = 8. Find the value of a that makes the
equation true.

2
6
3
-25

Respuesta :

opebiyifunmilola opebiyifunmilola

02-09-2020

Answer:

a=3

Step-by-step explanation:

opening the bracket, we have

4x-2x-2a=8

2x-2a=8

x=7

2(7)-2a=8

14-2a=8

collect like terms

-2a=8-14

-2a=-6

divide both sides by -2

a=3

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