15-a=20

Simple and best practice solution for 15-a=20 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-a=20 equation: 


Simplifying
15 + -1a = 20

Solving
15 + -1a = 20

Solving for variable 'a'.

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

Add '-15' to each side of the equation.
15 + -15 + -1a = 20 + -15

Combine like terms: 15 + -15 = 0
0 + -1a = 20 + -15
-1a = 20 + -15

Combine like terms: 20 + -15 = 5
-1a = 5

Divide each side by '-1'.
a = -5

Simplifying
a = -5

See similar equations:

| 14=x+4 | | 5+v=4+3 | | 2(h+1)=6 | | 7-t+1=6 | | 1x+10y=50 | | 3y=-30 | | -35= | | 5x+3=10x-17 | | 6x+4x= | | y-8=-20 | | 6=r+7 | | -5x-6y-8x+9y= | | y-4=10 | | 12-8x=27-15x | | 3x+13=-9-8x | | 4x+31=14x-49 | | 4(x+34)=2x | | y+19=3 | | 2x+9=x+98 | | y+6=13 | | 11-q=4 | | 3s-1=20 | | 12-p=10 | | 10-h=2 | | g-5+4=2 | | m-5=-3 | | 5r-2=13 | | -3+k=0 | | d-5=-2 | | 2e+e=9 | | 2-p=0 | | 0=m-3 |

Equations solver categories