12=-x-3x

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



12=-x-3x

We move all terms to the left:

12-(-x-3x)=0

We add all the numbers together, and all the variables

-(-4x)+12=0

We get rid of parentheses

4x+12=0

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

4x=-12

x=-12/4

x=-3

See similar equations:

| 1)(x+7)(2x-7)=0 | | 6(-2)-7y=-10 | | x=-3x²@ | | x(x-16)-56=0 | | =-3x²-3x+9 | | 4x-7(x+3)=-36=3(x+2)=2(2x+7) | | x=-3x²-3x+9 | | 8x-(2x+19)=29 | | 3(5x+2)=2(3×-6) | | b^2-8b+8=0 | | 8(8x-9)=44 | | x=1/60 | | 0.01=1/x | | 0.005=1/x | | 2/5m=−32 | | 13-7x=-57 | | -4-1=y | | 4x+10=4x-16 | | 9-3i/1+i=0 | | -x-(-5x-17)=1 | | 2x+27÷9=35 | | m+200/4=50 | | 12y+6=36 | | x^2-4x-42=-7 | | 5-2y+12=11 | | 6+12y=40 | | 4(g+5)=140 | | 8^5x-7=19 | | x4-5x3+6x-2=0 | | (5x+3)+(x-31)+(x-18)=360 | | 6y-8+y=(5-y) | | 15w^2-4w-3=0 |

Equations solver categories