12x+21=-2x-21

Simple and best practice solution for 12x+21=-2x-21 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=-2x-21 equation:


Simplifying
12x + 21 = -2x + -21

Reorder the terms:
21 + 12x = -2x + -21

Reorder the terms:
21 + 12x = -21 + -2x

Solving
21 + 12x = -21 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
21 + 12x + 2x = -21 + -2x + 2x

Combine like terms: 12x + 2x = 14x
21 + 14x = -21 + -2x + 2x

Combine like terms: -2x + 2x = 0
21 + 14x = -21 + 0
21 + 14x = -21

Add '-21' to each side of the equation.
21 + -21 + 14x = -21 + -21

Combine like terms: 21 + -21 = 0
0 + 14x = -21 + -21
14x = -21 + -21

Combine like terms: -21 + -21 = -42
14x = -42

Divide each side by '14'.
x = -3

Simplifying
x = -3

See similar equations:

| 6=-5-x | | 3(n-1)=-5n+3-2n | | 5.21=10 | | 14.5+2-6= | | 2.9x-4.6=7 | | 3b-1= | | 5/y+3/4=7 | | 4x=-200 | | 9m^3-12m^2=0 | | x+(-12)=-3 | | X^2-10x-12=o | | 14y-14+3y=-3y-6+9 | | (22*w)/3=-7 | | 22*w/3=-7 | | 12+7q=17+9q | | 2x+4=3-6x | | 105=1.75n^2-31.75n | | 11z=15z | | x^2+x^2+9x-56=0 | | 153=17x | | 2/3(7+4/3)=3/2x | | .4x+.4(10)=.3(x+30) | | -4c+19=17 | | 6x*1y=30 | | (x-10)+(3x+11)=0 | | t^2-15+54=0 | | 6p-6p=2p+12 | | 2(f-4)+2-f=18 | | 2-2b=-16 | | -3t-14-1=-30 | | -7=X-11 | | -78=7x+4x-1 |

Equations solver categories