21=-3(x+12)

Simple and best practice solution for 21=-3(x+12) 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 21=-3(x+12) equation:


Simplifying
21 = -3(x + 12)

Reorder the terms:
21 = -3(12 + x)
21 = (12 * -3 + x * -3)
21 = (-36 + -3x)

Solving
21 = -36 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
21 + 3x = -36 + -3x + 3x

Combine like terms: -3x + 3x = 0
21 + 3x = -36 + 0
21 + 3x = -36

Add '-21' to each side of the equation.
21 + -21 + 3x = -36 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = -36 + -21
3x = -36 + -21

Combine like terms: -36 + -21 = -57
3x = -57

Divide each side by '3'.
x = -19

Simplifying
x = -19

See similar equations:

| 7x+2(4-x)=12-3(5+6x) | | 63-4x=9-10x | | -7(2t+7)=-7 | | 9=4x-x+6 | | 4(-4+7x)=-212 | | tanx*sinx=3cosx | | 30-5n=25 | | -78=-6(m+3) | | 4(f-7)=-8 | | 4(b-10)-10=-5(-3b-11)-6 | | 8x-19=3(x-3) | | 6(-9+x)=18 | | 7(-5)+y=11 | | -21=15-2x | | (x+12)*0.5=2.5x | | 6(-10+x)=-12 | | 2r-6=14 | | 14+13x=4x+113 | | -4x+2=4-5x | | 5(3x-12)=45 | | -12(-2-3a)=4(9a+12) | | 0=-5(-2+r) | | -4n^2-2n+1= | | f(x)=5-7(8) | | r^2-17r+c= | | 3*(3x-4)+11=17 | | -10(s+4)=-119 | | x^2-19x+c= | | 4x+4+x=-1 | | 2x-39=x-33 | | r^2+21r+c= | | 10+01+10+10+10+10+10+10+10+10+10+10+1+10+10+10+10+1+10+110=1000x |

Equations solver categories