21x+9=9x-99

Simple and best practice solution for 21x+9=9x-99 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 21x+9=9x-99 equation:


Simplifying
21x + 9 = 9x + -99

Reorder the terms:
9 + 21x = 9x + -99

Reorder the terms:
9 + 21x = -99 + 9x

Solving
9 + 21x = -99 + 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.
9 + 21x + -9x = -99 + 9x + -9x

Combine like terms: 21x + -9x = 12x
9 + 12x = -99 + 9x + -9x

Combine like terms: 9x + -9x = 0
9 + 12x = -99 + 0
9 + 12x = -99

Add '-9' to each side of the equation.
9 + -9 + 12x = -99 + -9

Combine like terms: 9 + -9 = 0
0 + 12x = -99 + -9
12x = -99 + -9

Combine like terms: -99 + -9 = -108
12x = -108

Divide each side by '12'.
x = -9

Simplifying
x = -9

See similar equations:

| Y=4x+31 | | 6(x+y)=xy | | 3(2b)-3(1)-7=50 | | 6x-2x+3=x+12 | | -12x+24=-36 | | 2x-5+5x=30 | | 11-c=15 | | x^5+9x^4-x-9=0 | | 7(x+9)-7= | | -3X+16=15 | | 11x-2+15x=0 | | c-11=15 | | 6-3[p-7]=-9 | | -2r-18=-8 | | X-10=20-X | | 5p-14=15p-10p | | 5x-6+2x=1 | | X+8y=36 | | 108=27 | | r-4568=6318 | | 3x^2-50x=0 | | 2a+4+2a=11 | | -3+14=-4 | | y+17=-22 | | 56a^2+17aw-3w^2=0 | | 5=3x+6x-7 | | 20v-19v=16 | | 3x^4-22x^3+44x^2-8x-32=0 | | 14+4b=-6 | | (X^3y^2+x)dy+ydx=0 | | 8x+244=180 | | 1.3x+37.2=1.9x |

Equations solver categories