Answer:
x= 5
Step-by-step explanation:
20x + 7 - 4x = 87
you start by combining like terms = 20x - 4x = 16x
16x + 7 = 87
next you want to isolate the variable so you would subtract 7 from both sides .
-7 . -7
16x = 80
then you divide by 16 on each side
x = 5
x=5
Subtract 4x from 20x.
Move all terms not containing x to the right side of the equation.
Subtract
7
from both sides of the equation.
16x = 87 − 7
Subtract 7 from 87.
Divide each term by 16 and simplify.
