amanf

2020-12-17

Solve the equation. Check your solution. 21 = 4x - 9 - x

crocolylec

Skilled2020-12-18Added 100 answers

Given equation:

21=4x-9-x

21=3x-9

add 9 to both sides of the equation to isolate the variable term:

21+9=3x-9+9

3x=30

divide both sides by 3

x=10