7x-21=15-2x

Simple and best practice solution for 7x-21=15-2x 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=15-2x equation:


Simplifying
7x + -21 = 15 + -2x

Reorder the terms:
-21 + 7x = 15 + -2x

Solving
-21 + 7x = 15 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-21 + 7x + 2x = 15 + -2x + 2x

Combine like terms: 7x + 2x = 9x
-21 + 9x = 15 + -2x + 2x

Combine like terms: -2x + 2x = 0
-21 + 9x = 15 + 0
-21 + 9x = 15

Add '21' to each side of the equation.
-21 + 21 + 9x = 15 + 21

Combine like terms: -21 + 21 = 0
0 + 9x = 15 + 21
9x = 15 + 21

Combine like terms: 15 + 21 = 36
9x = 36

Divide each side by '9'.
x = 4

Simplifying
x = 4

See similar equations:

| 0=s^2+12s+35 | | 21-8x=1-4x | | 30x+5p=0 | | 6x-10.2=2.4 | | 3(5+x)-2=8(2-x) | | 9x-81=5x+39 | | 5x-18=9-4x | | X=4+-1 | | 2(x^2)+4=52 | | x^3-x^2+24x+36=0 | | 5(3x-2)+6x=52 | | X=(-2-x)+6 | | A=1.2h(x+y) | | -62-2x=7x+23 | | x^3+2x^2-4x-12=0 | | -16+12x=13+11x | | -93+5x=123-7x | | -68+x=82-4x | | 1=a+2 | | -35=10-4s | | -65+12x=2x+135 | | -4-6x=8-10xdecimal | | 0.4(x-3)=-3.2 | | -5+x=16 | | Y=-2-(-18) | | -194+7x=67-2x | | X=-12-6 | | X=-12-6x | | -6(p-8)=84 | | 3x-45=45 | | 6x+3=3x+8 | | -126+7x=34-x |

Equations solver categories