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 = 3a
21 + 3a = 0

Solving
21 + 3a = 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 + 3a = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 3a = 0 + -21
3a = 0 + -21

Combine like terms: 0 + -21 = -21
3a = -21

Divide each side by '3'.
a = -7

Simplifying
a = -7

See similar equations:

| 5x+6=2x-4 | | -5+5a-4-2a+3a= | | 3b-3-11b-9= | | 1x+6=2x-4 | | -7+g+1-6g= | | x+4*7=70 | | 18(x-2)-4(-9+3x)=-14 | | 5z-4=3(z+2) | | x-16=44 | | 3A-4=-13 | | 9x+8=3x-7 | | x^3+3x^2=18x | | -18(c-1)-18= | | 2x^2=6 | | 3x+5=4x-30 | | 1-4(u-1)= | | 7x-2x-10=25 | | 3x+5=2y-20 | | 18(x-2)-4(9+3x)=-14 | | 5h+h-4h+1-2h= | | 18=-3x | | x+4+7=70 | | 0.04y=5.4 | | -12+7(d-1)+14-d= | | 6x^2-4=5x | | 8x=2(x+15) | | 6y+9+4y=-3 | | 4x+3=2x-7 | | 1-g+5-2g+3(g-2)= | | 11x-21=17-18x | | 1-s+2+2s-3s+1= | | 3(2+c)=12 |

Equations solver categories