15=21-2y

Simple and best practice solution for 15=21-2y 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 15=21-2y equation: 


Simplifying
15 = 21 + -2y

Solving
15 = 21 + -2y

Solving for variable 'y'.

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

Add '2y' to each side of the equation.
15 + 2y = 21 + -2y + 2y

Combine like terms: -2y + 2y = 0
15 + 2y = 21 + 0
15 + 2y = 21

Add '-15' to each side of the equation.
15 + -15 + 2y = 21 + -15

Combine like terms: 15 + -15 = 0
0 + 2y = 21 + -15
2y = 21 + -15

Combine like terms: 21 + -15 = 6
2y = 6

Divide each side by '2'.
y = 3

Simplifying
y = 3

See similar equations:

| 3n=-8 | | 4x+6=32x+192 | | 8=10-2c | | 4+2p= | | 7a+(1+4)=19 | | 3=2h-5 | | =120-(4*150) | | 2y-4x=-20 | | 2=20-2w | | -9-(-21)+(-24)-19= | | 3=9-3j | | X-8+2=0 | | 21b=2(4) | | 105+8x-4=14(5+2x)-9 | | 3b-14=4 | | 25X(x-5)= | | 38=47-v | | n=.6n+5.3 | | 54=43+x | | 9=-2+w | | 120-(4*150)= | | 5y-30=20 | | 7+2c=15 | | M+15=-15p | | 7+2c=1 | | V-6=-2 | | 5x+15-9=32 | | 120-(4*120)= | | 3x+12=36-5y | | 3x+19=10x+18 | | 2d-5=1 | | -5a=29 |

Equations solver categories