20=12-2a

Simple and best practice solution for 20=12-2a 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 20=12-2a equation:


Simplifying
20 = 12 + -2a

Solving
20 = 12 + -2a

Solving for variable 'a'.

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

Add '2a' to each side of the equation.
20 + 2a = 12 + -2a + 2a

Combine like terms: -2a + 2a = 0
20 + 2a = 12 + 0
20 + 2a = 12

Add '-20' to each side of the equation.
20 + -20 + 2a = 12 + -20

Combine like terms: 20 + -20 = 0
0 + 2a = 12 + -20
2a = 12 + -20

Combine like terms: 12 + -20 = -8
2a = -8

Divide each side by '2'.
a = -4

Simplifying
a = -4

See similar equations:

| 1/2x9 | | 15x-10x+3=5x+7-3 | | (5x+8y)-(11x-3y+6)= | | 9-2(x+11)= | | 14+1x=6 | | 3(x+6)=120 | | 58x=-42 | | 2x-90=x+15 | | x^2+bx-19=0 | | p/8=45 | | 2x-8+6=4x-7 | | X/42=8/15 | | 3-4t=-4t+3 | | -(7r-6)=-8r | | 4(x-3)-(2-3x)=6(x+7) | | 14-3(x+2)=-4 | | 9+5t=4+5t | | -18x+9y=60 | | m/8=32 | | 2(y+2)+5y=6y+-4 | | -8+m=39 | | 14m=98 | | x=122+15y | | 33n=-74 | | -10+c=35 | | 5-3(x-3)=3(2-3x) | | 30x^2-80x-10=0 | | -1=-log(x-9)/logx | | -4+c=44 | | 120+100x+44-22x=398 | | 5x^2-10=20 | | 30x+-6=-28x+-44 |

Equations solver categories