Question

Which value for x makes the sentence true?

8x + 4 = 20

A. x = 12
B. x = 4
C. x = 8
D. x = 2

Answer 1

In order to get the answer to this question you will have to solve the equation before you can get the answer.

`8x+4=20`

`-4-4`

`20-4=16`

`8x=16`

`/8/8`

`16/8=2`

`x=2`

Therefore your answer is option D "x = 2."

Hope this helps.

Answer 2

8x+4= 20

move +4 to the other side

sign changes from +4 to -4

8x+4-4= 20-4

8x= 20-4

8x= 16

divide both sides by 8 to get x by itself

8x/8= 16/8

Cross out 8 and 8, divide by 8 and then becomes 1*1*x= x

x= 16/8

Answer: D. x = 2