21=-3x-4x

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



21=-3x-4x

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(-7x)+21=0

We get rid of parentheses

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:

| 9x-3=218 | | 7x-4+2=5 | | 10x-5=-5x-5+-15x | | (2x-3)+3(x+1)=5x+2 | | -11=-5p+1+8 | | 8=x+8+8x | | 14=6k+8k | | 4/5(n+6)=-2 | | x^2-20x+70=0 | | n(-3/4)=12 | | -p/3=2 | | -1/8y=-12/18 | | (3x)2+5x-10=0 | | 36-40x=5x | | Y-5=7(x+9) | | x+3/8=(-5/12) | | x*0.0009765625=0,01 | | 3x+34=10x+10 | | X^3+3x^2+2x+6X=0 | | 19j-11j-1=7 | | 11=4(c-16)+3 | | x×x+5=850 | | 2=3z+-7 | | 6q=-6 | | -17r+7r+18r=-16 | | x(x+5)=850 | | (2x+9)(6+x)=0 | | 2=2(b-15) | | 10m-8m+3=13 | | 6x12-7=36 | | 11y+2y-7y+2=20 | | 19y-10=18 |

Equations solver categories