Find the value of x in the equation 2 x + 20 = 15 + 3 x.

A. 16

B. 1

C. - 5

D. 25

The value of x is 5.

2x + 20 = 15 + 3x

Group like terms, change its signs.

2x - 3x = 15 - 20

-1x = - 5

-1x/-1 = - 5/-1

x = 5

To check: substitute x by its value. x = 5

2x + 20 = 15 + 3x

2 (5) + 20 = 15 + 3 (5)

10 + 20 = 15 + 15

30 = 30