12x+21=9x-15

Simple and best practice solution for 12x+21=9x-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 12x+21=9x-15 equation:


Simplifying
12x + 21 = 9x + -15

Reorder the terms:
21 + 12x = 9x + -15

Reorder the terms:
21 + 12x = -15 + 9x

Solving
21 + 12x = -15 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
21 + 12x + -9x = -15 + 9x + -9x

Combine like terms: 12x + -9x = 3x
21 + 3x = -15 + 9x + -9x

Combine like terms: 9x + -9x = 0
21 + 3x = -15 + 0
21 + 3x = -15

Add '-21' to each side of the equation.
21 + -21 + 3x = -15 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = -15 + -21
3x = -15 + -21

Combine like terms: -15 + -21 = -36
3x = -36

Divide each side by '3'.
x = -12

Simplifying
x = -12

See similar equations:

| X=-5 | | 2x-15-x=21+10x | | 2x+33=2 | | -6x+8=4X-42 | | Bx-12=2x+33 | | 5x+10=7x+20 | | 3(t-2)=15 | | 2w-7=25 | | (y-5)-(y+5)=4y | | 4x-27=8x-63 | | 4(5x-9)=-2(x+7) | | 2m-4=8 | | -9+x=-11-x | | 7=2+1x | | 44-2(3x+4)=-18x | | 15x+9=12x+27 | | 6n-4=-2 | | 2(-x-5)=12 | | 3(2x+11)=9 | | 4.3n-2.1(n-4)=15 | | 20=5(-3+x) | | 5y+2=.5(10y+4) | | -11+10(p+10)=4-5(2p+11) | | 4.5-1.5(6m+2)=6 | | -12(x-12)=-9(1+7x) | | 12(2k+11)=12(2k+12) | | 19a-3(a-6)=66 | | 10a+5(a-3)=15 | | 10(x+3)-(-9x-4)=x-5+3 | | -(5x+8)+12=34 | | 7(d-5)+12=5 | | -6(2x-3)+15=9 |

Equations solver categories