12+a=2(a-4)

Simple and best practice solution for 12+a=2(a-4) 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 12+a=2(a-4) equation:


Simplifying
12 + a = 2(a + -4)

Reorder the terms:
12 + a = 2(-4 + a)
12 + a = (-4 * 2 + a * 2)
12 + a = (-8 + 2a)

Solving
12 + a = -8 + 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.
12 + a + -2a = -8 + 2a + -2a

Combine like terms: a + -2a = -1a
12 + -1a = -8 + 2a + -2a

Combine like terms: 2a + -2a = 0
12 + -1a = -8 + 0
12 + -1a = -8

Add '-12' to each side of the equation.
12 + -12 + -1a = -8 + -12

Combine like terms: 12 + -12 = 0
0 + -1a = -8 + -12
-1a = -8 + -12

Combine like terms: -8 + -12 = -20
-1a = -20

Divide each side by '-1'.
a = 20

Simplifying
a = 20

See similar equations:

| 3x+4x+1/7= | | 2(7t-4)=13 | | 7x+43x-9=10(5x+10) | | 4x+12x-6=4(4x+4) | | 34-2(x+3)=4x | | 3x+4x+4=19 | | 5+12=71+x | | x+2+32=0 | | .08(y-2)+.12y=.14y-.01(40) | | y=-7x-3 | | 4x-2=11-58 | | 16=4x+2x-4-4 | | -34(b+48)=-17(b-79) | | -18.4=b-14.7 | | 3n+17=4 | | 7x^2-3x-60=0 | | y=x^3-2x^2-x+2 | | 20x-7+12x=19-1+7 | | 7X+9=3X-1 | | -65(r+32)=-78(r+60) | | -3/4=12 | | 7x-3=13x-87 | | (4w+2)(3+w)=0 | | 6(x+4)/5=3x-5 | | 3x-4+5x-2=90 | | 4(6x+9)-10x= | | x+2x-7-8=12 | | x+3x-7-8=12 | | 9x-8=3x-10 | | .30x+.30(50)=.15(50) | | 3b^2-5b^2+2b=0 | | 2=1+v |

Equations solver categories