3x-21=-4x

Simple and best practice solution for 3x-21=-4x 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-21=-4x equation: 



3x-21=-4x

We move all terms to the left:

3x-21-(-4x)=0

We get rid of parentheses

3x+4x-21=0

We add all the numbers together, and all the variables

7x-21=0

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

7x=21

x=21/7

x=3

See similar equations:

| 8/7x=-2 | | 35000÷600x=0 | | -6-(-2n)=n+(-2)+4n | | 35000/600x=0 | | 4x+6-2x=18-4x | | 4d+3=0 | | 12x-5=3+31 | | 3•x•5=30x | | 9n+4=n-3n-16 | | 5x-³=5² | | -8+20x-5=-x+31+4x | | -8+20x-5=-x+31+4 | | -6(x-3)+4(x-7)=-2 | | 7(j−89)=63 | | 3n+(-5)=n+(-4n)+(-3) | | 2(x-1)=21 | | t/4+10=12 | | (2x+3)=26 | | 3x+24=8x+18 | | 2(3x+2)+3(x-2)=16 | | t4+ 10=12 | | -4(w+1)=124 | | 3•(4x)=24x | | 2(2+3x)=2x+12 | | 4z-18z=-126 | | 7500=x+.052 | | 13x-90=79 | | u+15=2(2u-2)-5 | | 1/4x+1/8x=24 | | 10*x+5-x-9=10*(5-x)+x | | 10p+29p=4p-31p | | 0+y=160 |

Equations solver categories