21=3-9y

Simple and best practice solution for 21=3-9y 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=3-9y equation: 



21=3-9y

We move all terms to the left:

21-(3-9y)=0

We add all the numbers together, and all the variables

-(-9y+3)+21=0

We get rid of parentheses

9y-3+21=0

We add all the numbers together, and all the variables

9y+18=0

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

9y=-18

y=-18/9

y=-2

See similar equations:

| z-44=-44 | | -8+8b=10b | | 3x+7+9x+7=3 | | -2-8v=-6v | | -8+2x-30=90 | | 7q-8=10q+10 | | 6^-2x=4 | | 1.2x+4.6=-0.8+54.6 | | -5s=s-6 | | 6x+4x=440 | | x=9=-9 | | x=–3 | | -4x+2x-30=50 | | 4p+9=5p | | 4x+10=6x-10x2x | | 3(5x-10)=-7x+6+8 | | -4m=10-5m | | 9/5(k-63)=k= | | 8x-33=4x-9 | | –2(x–20)=44–x | | 9x-10=7x-28 | | 3=3u-5 | | -7(-5+2x)=-133 | | 2=1-2g | | 9=u/3+7 | | t+26=21 | | 3(-4x+x)=-2 | | 7x+3=59-x | | -18=2-4r | | -6+-3g=-15 | | 5x+3=7x=17 | | -2(1-2a)=3(a-1) |

Equations solver categories