12a+3+18+9a=

Simple and best practice solution for 12a+3+18+9a= 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 12a+3+18+9a= equation:


Simplifying
12a + 3 + 18 + 9a = 0

Reorder the terms:
3 + 18 + 12a + 9a = 0

Combine like terms: 3 + 18 = 21
21 + 12a + 9a = 0

Combine like terms: 12a + 9a = 21a
21 + 21a = 0

Solving
21 + 21a = 0

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -21 + 21a = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 21a = 0 + -21
21a = 0 + -21

Combine like terms: 0 + -21 = -21
21a = -21

Divide each side by '21'.
a = -1

Simplifying
a = -1

See similar equations:

| 1/3(6x-9)=2x-3 | | 86-3X=42X+16 | | 4.5x+(-5)=17 | | 10(1-2(.5))=-5(2(.5)-1) | | 9-10X=53-24X | | p-5.16=15.48 | | 12(2-x)=4-6(x+2) | | 93+-84= | | 10(1-2(1.5))=-5(2(1.5)-1) | | x-4y=48 | | 3+4y=4a+7 | | 15r+9=96 | | 6p^2+21p= | | 93=-84 | | 7x+3=8x-2 | | r(s+4)+9(s+4)= | | 5z^3+14z^2-24z=0 | | r^4=625 | | 4x-15=4x | | 4x^4-121=0 | | 3(1+6b)+3(6-3b)=21 | | 77-5x=7-9x | | 19x=11x | | 5+6x=25x | | 11x+50=6x+25 | | 2x^3+3x^2-72x-108=0 | | 50C=19N+3 | | 3x=2(x+10) | | 3+n/7=-5 | | 2(0.3r+1)=23-0.1r | | -9+4(x-3)=-4x+3 | | 3(x+3)-sx+7=x+4 |

Equations solver categories