3y-9=21x

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


Simplifying
3y + -9 = 21x

Reorder the terms:
-9 + 3y = 21x

Solving
-9 + 3y = 21x

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '9' to each side of the equation.
-9 + 9 + 3y = 9 + 21x

Combine like terms: -9 + 9 = 0
0 + 3y = 9 + 21x
3y = 9 + 21x

Divide each side by '3'.
y = 3 + 7x

Simplifying
y = 3 + 7x

See similar equations:

| 12r-8=4-12r | | 10-6x+3=x | | 10a+13=20a+16 | | (y/2)-2=2 | | 8j=10+10j | | 2x-(x-1)=3x-7 | | -7+X=8-X | | 8(2x+4)=80 | | 6+y=24-2y | | 1/3x-4=3/4x+4 | | 6-8n=-15-5n | | -7+x=8-3 | | 5p=p | | 6y-12=42x | | -4-(-5x)=-3x+1 | | 12x=6-8x | | 6x+10=5x+9 | | T-0.37xt=12.6 | | -6(2x-5)=-54 | | 10-n-6n=1-4n | | ab+bc+ac=abc | | 6x-x=45 | | -6(2x-5)=54 | | f(5)-f(3)f(x)=10x-6 | | 7(3x-4y+7)+5(2x-3y+5)= | | 8t-4t=27+t | | 40-3x=16+9x | | 10-x=3x-30 | | 135=9*h | | 3p^3=0 | | 66-(-32)= | | (3n-1)(4n+1)=0 |

Equations solver categories