Question

What is 2x plus 21 divided by 2 equals x plus 7?

Answer 1

ANSWER: x=-7/2

Solution:

2x+21/2=x+7

x+21/2=7

x=7-21/2

x=-7/2

Answer 2

-3.5

Explanation:

2x+21/2=x+7

2x + 10.5 = x + 7

-x -x

x + 10.5 = 7

-10.5 -10.5

x = -3.5