-x-9=7x+21

Simple and best practice solution for -x-9=7x+21 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 -x-9=7x+21 equation: 



-x-9=7x+21

We move all terms to the left:

-x-9-(7x+21)=0

We add all the numbers together, and all the variables

-1x-(7x+21)-9=0

We get rid of parentheses

-1x-7x-21-9=0

We add all the numbers together, and all the variables

-8x-30=0

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

-8x=30

x=30/-8

x=-3+3/4

See similar equations:

| (x-4)²81=0 | | 19+20-17p=11p-17 | | 2x6x8x4=80 | | 5xx6x= | | -19y-6=-19-18y-2 | | 180+(4x-2)=(2x+8) | | 4x+25x=7 | | 1.1x+1.2x-5.3=-10 | | 3(2x-6)=2(-2x+6) | | 10(10+2n)-8(n+9)=5+9n+1+3n | | 13x-12=5x+24 | | 9+4n=-55 | | (5n+7)-(3n+10)=13 | | -19d+14=-20d-6 | | -20-9g+4=20-12g | | 7x+2-5x=100 | | 5a+2a+4a+a=180° | | -0.01+0.9q+7.52=-5.72-1.8q | | -2=-6+v/6 | | 52+14x+6+x=180 | | 4(3x-5=44 | | (4x+2)=(2x+4) | | 2(n-1+4=2(3n-1) | | -2p-10-8=-8(-2p-9) | | 18v=17v+16 | | (x-4)281=0 | | -240=-20x | | n+4(2n+3)=15 | | -9(-8j-7)-9j=8(-2j-2) | | -4x-2=+4•2 | | -1+16r=15r-14 | | 5-3x+9=20 |

Equations solver categories