8y+7=y-21

Simple and best practice solution for 8y+7=y-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 8y+7=y-21 equation:


Simplifying
8y + 7 = y + -21

Reorder the terms:
7 + 8y = y + -21

Reorder the terms:
7 + 8y = -21 + y

Solving
7 + 8y = -21 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
7 + 8y + -1y = -21 + y + -1y

Combine like terms: 8y + -1y = 7y
7 + 7y = -21 + y + -1y

Combine like terms: y + -1y = 0
7 + 7y = -21 + 0
7 + 7y = -21

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

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

Combine like terms: -21 + -7 = -28
7y = -28

Divide each side by '7'.
y = -4

Simplifying
y = -4

See similar equations:

| 8y=18.4 | | 3x-13y=30 | | 3t=-39 | | 10-2x=3+(x+7) | | xy+xz=280 | | 3t=-9 | | r/21=-3 | | 7(3+w)=6(2+w) | | 5m=18 | | -14x+2y=26 | | 20x-3y=71 | | 6x+3=-6 | | 3(y-2)=2(y-10) | | -13w=-104 | | 4s^3+21s^2+28s+8=0 | | 8x+19=4x+11 | | -4x+17y=86 | | 8(7/8)= | | -x+9=28 | | 9x-10=5x+4x+10 | | 9x-54=8x+48 | | -21w=-126 | | -8x+11y=83 | | -5x+12=-28 | | -5+(-7)-(6-2)= | | -6=-1x | | -15x=105 | | 10(1+3b)=-10+40b | | 4(y+3)=5(y-5) | | 4x^2+4x=7 | | 40x=560 | | 5x-12=7x |

Equations solver categories