-21=x-12

Simple and best practice solution for -21=x-12 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 -21=x-12 equation:


Simplifying
-21 = x + -12

Reorder the terms:
-21 = -12 + x

Solving
-21 = -12 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-21 + -1x = -12 + x + -1x

Combine like terms: x + -1x = 0
-21 + -1x = -12 + 0
-21 + -1x = -12

Add '21' to each side of the equation.
-21 + 21 + -1x = -12 + 21

Combine like terms: -21 + 21 = 0
0 + -1x = -12 + 21
-1x = -12 + 21

Combine like terms: -12 + 21 = 9
-1x = 9

Divide each side by '-1'.
x = -9

Simplifying
x = -9

See similar equations:

| -21=x-13 | | -2(2s-3)-6=-2(4s+9)-2 | | 3+3y=-12 | | 82=-x+11 | | y=9-4 | | 2a-b=ac+3b | | 12=-6-x | | 8n+5n=65 | | y=2(4)-7 | | 14x+78-(32+12x)=134 | | 0.8w-0.4w+0.1w=2 | | y=2(3)-7 | | 62=15+x | | (3m-2)(m-2)=m(3m-8)+3m | | r+22=14 | | 51=-x+15 | | 3x+5y^15= | | 5x+4+6x+9=10x+5 | | 6x-(5x+5)=-1 | | 42=-x-15 | | 4(5x-25)=20(x-5) | | -3x+5= | | (y-4)(y-4)=49 | | x+2-2x=3x-6 | | 30=x-15 | | 2z*2z+20z=0 | | 0.50b-2=1 | | 17m=0 | | 10+x=20 | | 8x-5=7x | | 46545675(85534)766678+84859592= | | 0.3x+0.8=0.5x+1 |

Equations solver categories