-7(a-21)=12

Simple and best practice solution for -7(a-21)=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 -7(a-21)=12 equation: 



-7(a-21)=12

We move all terms to the left:

-7(a-21)-(12)=0

We multiply parentheses

-7a+147-12=0

We add all the numbers together, and all the variables

-7a+135=0

We move all terms containing a to the left, all other terms to the right

-7a=-135

a=-135/-7

a=19+2/7

See similar equations:

| -7=4-4x/5 | | 3(2y-5=4y+3 | | 2x+89+109=180 | | 2x-98+109=180 | | 15x-4=32-3x | | 2*(x–1)-(1-3x)=5x-3 | | 2(x–1)-(1–-3x)=5x-3 | | -2x²=3x | | 4(2x-11)=28 | | 4(2x–11)=28 | | 6x+3x-2x=7 | | 9y2-13y+4=0 | | 150x=0.80x+540 | |  8f+19=15 | | 83=(2x-27) | | 5x+15=4x+36 | | 12345/x=5 | | 5-12r=-19 | | 3d/d=1d | | 1.50x=0.80x+540 | | 10a=40. | | 9x+4+10x+5=47 | | W=2,5a-25 | | 9x=160−7x | | -x+1=-2x+10 | | 13x+5=5x+77 | | 2x2-7x-30=0 | | 4c=12*4 | | 6x/3x=30 | | 4c=12×4 | | 1/6x+1/2=1/2(x-6) | | 2x+21=4x-2 |

Equations solver categories