3+y=7y-21

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


Simplifying
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 = -24
-6y = -24

Divide each side by '-6'.
y = 4

Simplifying
y = 4

See similar equations:

| -1/25g=17 | | x^-1/2=7 | | -6w-6=18 | | 6(n+7)+8=5n | | (2w/3)+3=(w/4) | | 15(.50)=25(0.25) | | 1.2=3.2n | | w^2+w=182 | | 22-(-19)-3-(-5)+7= | | 17+3n=32 | | (3sin(4x)/8x) | | -2w-6=2 | | 4(x+3)=9x+16 | | -10=2y+8 | | 4-2n=-2 | | 4+2x=139+2(400-x) | | Y+1=-3/4(x+7) | | 9+10v-5v=-6 | | 13=3x+4x+2 | | X-3/13=7/13 | | =4c-9c | | 4x^3+5x^2=16x+20 | | (7x+(5/6))(7x-(6/7)) | | 3-2x=7+10x | | 4V+5=7V+11 | | 9x+2(-2)=13 | | 4.05p+14.40=4.50(p+4) | | 9x-2(-2)=13 | | 0=x^2-100x+160 | | 5y+21/2(10y+4) | | 90=5x+7x+6 | | 3V+6=8B-29 |

Equations solver categories