3a-12=15

Simple and best practice solution for 3a-12=15 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 3a-12=15 equation: 


Simplifying
3a + -12 = 15

Reorder the terms:
-12 + 3a = 15

Solving
-12 + 3a = 15

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + 3a = 15 + 12

Combine like terms: -12 + 12 = 0
0 + 3a = 15 + 12
3a = 15 + 12

Combine like terms: 15 + 12 = 27
3a = 27

Divide each side by '3'.
a = 9

Simplifying
a = 9

See similar equations:

| 2b^2-8b-8=0 | | 12n^2+4n-40=0 | | 4xy=-20 | | C(20)=.76*20+171.4 | | -2.5d=1 | | 2x/4= | | 2ab+5ab= | | =40+40*0+1 | | -3u-4=10 | | 25x^2+9x-80=0 | | 5x-(4x-7)(3x-5)=6-3(4x-9)(x-1) | | e^3x+2=e^3 | | f(x)=2x^4-x^3+49-25x-25 | | f(t)=4t^3-18t+24t+17 | | x(16/100)=0.8 | | -7z-5z=6/7 | | 8-22=-6 | | 5n=5/8 | | 6-7d-8d-5= | | 7(x+1)=4(x-2)+4x | | 1/4•10=1000 | | y^3-y^2-16y-20=0 | | 15X+10X= | | X^2+2x-1=x^2-1+2x | | 28=7/4v | | 4(2x+3)-(6x+9)=2(x-4) | | 48mn-(-31mn)= | | 3/8v=15 | | 3d^2-36=0 | | -7x-2(-4x+12)=-14 | | -8xyz+9y+5z+1=-10y+4z-3 | | 8x+12-6x-9=2x-8 |

Equations solver categories