-3x=12+9

Simple and best practice solution for -3x=12+9 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 -3x=12+9 equation:



-3x=12+9
We move all terms to the left:
-3x-(12+9)=0
We add all the numbers together, and all the variables
-3x-21=0
We move all terms containing x to the left, all other terms to the right
-3x=21
x=21/-3
x=-7

See similar equations:

| 10n=4n-18 | | 5+11z-1=9z+10-4z | | 3(7-x)-5(x+1)=0 | | 36=6b-(6+b) | | 9(x-7)=54 | | 5+3(3u-5)=-6(3u-1)+9u | | 3x+2x+5x=150 | | 4(5+2x)-5=3*3x+7) | | 1-8m-4=13 | | 8=48-(-2m) | | x+8=3x-28 | | -5=-6-n | | -7-10x=-87 | | 4m+8=-137m | | -13.32-14.5y=-10.9 | | 29-8n=-8(1+6n)-3 | | 5(2x+5)=2(8+2x) | | 1/2(24)(3x)=10(2x+8) | | 4x-7(3x-2)=5(x+8) | | 29-8n=8(1+6n)-3 | | -5(2+3x)=-175 | | -6=-3+e | | 4x-7(3x-2)=5(x+8 | | 2y+1=2y+1 | | 2x-11+x+39+x=180 | | -2x+5-7(x+1)=-11 | | 35=4b+16 | | 5n^2-15n-2=0 | | 6(3+y)=3(3-y) | | 1.5x+2=2x | | 7-(8x-5)=-3x+12 | | 10z2–7z=0 |

Equations solver categories