12-3y=21

Simple and best practice solution for 12-3y=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 12-3y=21 equation:


Simplifying
12 + -3y = 21

Solving
12 + -3y = 21

Solving for variable 'y'.

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

Add '-12' to each side of the equation.
12 + -12 + -3y = 21 + -12

Combine like terms: 12 + -12 = 0
0 + -3y = 21 + -12
-3y = 21 + -12

Combine like terms: 21 + -12 = 9
-3y = 9

Divide each side by '-3'.
y = -3

Simplifying
y = -3

See similar equations:

| g(6)=-1-76 | | 7(7+6x-1)=9(9+x+3) | | 2x-5=9x+5 | | 7x[squared]-20x+9=0 | | 49+7x=64+104 | | 2x-16=2(x-6)-4 | | 7x[squared]-6x=0 | | (3x^2)/(27x)=81 | | -4tan(X/20) | | (6-v)(3v+4)=0 | | 2x-1/3(-1-3x)=-2 | | 6x-13=3x+2 | | 5w-3=(w+3) | | 5/10+2,5/10=3x-6 | | 2x-3-8x=27 | | f(x)=4x^2+24x-8 | | 10+2+3p=36 | | 8x+24=6x+8 | | g(x)=x^2+5 | | 0,5x+2,5=3x-6 | | 9+11x=9x | | (y)dx+x(xy-1)dy=0 | | 3x-x+8+5x=2+10 | | q+(25)=81 | | (3x+9)(x-4)=0 | | 5/3x=4-3/2x | | 12x+17=6x+167 | | 10.5x151/8 | | 3x(x+2x)=4x^2 | | (x+14)=35 | | -2x+3x=-4+17x | | 2/2.54 |

Equations solver categories