7x-21=4x+18

Simple and best practice solution for 7x-21=4x+18 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 7x-21=4x+18 equation:


Simplifying
7x + -21 = 4x + 18

Reorder the terms:
-21 + 7x = 4x + 18

Reorder the terms:
-21 + 7x = 18 + 4x

Solving
-21 + 7x = 18 + 4x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-4x' to each side of the equation.
-21 + 7x + -4x = 18 + 4x + -4x

Combine like terms: 7x + -4x = 3x
-21 + 3x = 18 + 4x + -4x

Combine like terms: 4x + -4x = 0
-21 + 3x = 18 + 0
-21 + 3x = 18

Add '21' to each side of the equation.
-21 + 21 + 3x = 18 + 21

Combine like terms: -21 + 21 = 0
0 + 3x = 18 + 21
3x = 18 + 21

Combine like terms: 18 + 21 = 39
3x = 39

Divide each side by '3'.
x = 13

Simplifying
x = 13

See similar equations:

| -2(0)-26=-24 | | 2(28-6y)-3y=-19 | | 8x+67+-8x=x | | -10.5-5= | | F(-2)=4x+6 | | 2x-14=5x+9 | | Iflogx=-2findx | | 70=7u+7 | | 9d-6=7d-8 | | -7s+2=-5 | | 2x^2+1x=4 | | (2x+30)=180 | | -2r+2=8 | | 3x-0=26 | | 2r+8=16 | | y=-7x-11 | | 9=3(-1+n) | | 3(0)-y=26 | | -8n+2=26 | | 3+25x=20x+5 | | -40=7a+2 | | 1=-3b+10 | | -2=10y+8 | | 2x+2y+6z=22 | | -13=7z-6 | | F(x)=4+6 | | 3x^2+30x-70=0 | | 80+5x=180 | | 6.47x=4.56x+10 | | 3x^2-26x-10=0 | | 20x+5=-1+21x | | -15+13+11+-9=x |

Equations solver categories