y-3=7y-21

Simple and best practice solution for y-3=7y-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 y-3=7y-21 equation:


Simplifying
y + -3 = 7y + -21

Reorder the terms:
-3 + y = 7y + -21

Reorder the terms:
-3 + y = -21 + 7y

Solving
-3 + y = -21 + 7y

Solving for variable 'y'.

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

Add '-7y' to each side of the equation.
-3 + y + -7y = -21 + 7y + -7y

Combine like terms: y + -7y = -6y
-3 + -6y = -21 + 7y + -7y

Combine like terms: 7y + -7y = 0
-3 + -6y = -21 + 0
-3 + -6y = -21

Add '3' to each side of the equation.
-3 + 3 + -6y = -21 + 3

Combine like terms: -3 + 3 = 0
0 + -6y = -21 + 3
-6y = -21 + 3

Combine like terms: -21 + 3 = -18
-6y = -18

Divide each side by '-6'.
y = 3

Simplifying
y = 3

See similar equations:

| (3+n)/7=-5 | | 6-(-3y)=-12 | | f+4/g=6 | | -4=6x-8(x+3) | | w/3+12=13.2 | | w/2+8.1=11.1 | | 5n^2+27n-56=0 | | N^2+15n-26=0 | | 2(2t-4)+1=16-t | | 4x-10y=-20 | | 6+9y-15y=-54 | | k/3+6.8=8.41 | | 8x-5y=-17 | | 94-7x=20x+22 | | 6+9-15y=-54 | | n/4+14.5=16.28 | | -3x-4y-6x-4=2+8y | | -4c+7=17 | | u/14+258=286 | | G^2-12g+35=0 | | t/28+172=182 | | 6x+3=9x-1 | | 60z^4/15z^8 | | -9x-6y=54 | | 2x-6=168 | | 9x-8=ln(12125) | | 4/5-15 | | 16t^2-65t-2=0 | | y*y-2y=3 | | 12(x+9)=-108 | | 7=3+1x | | 7=15-2(-3+7) |

Equations solver categories