21x+7=18x-8

Simple and best practice solution for 21x+7=18x-8 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+7=18x-8 equation:


Simplifying
21x + 7 = 18x + -8

Reorder the terms:
7 + 21x = 18x + -8

Reorder the terms:
7 + 21x = -8 + 18x

Solving
7 + 21x = -8 + 18x

Solving for variable 'x'.

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

Add '-18x' to each side of the equation.
7 + 21x + -18x = -8 + 18x + -18x

Combine like terms: 21x + -18x = 3x
7 + 3x = -8 + 18x + -18x

Combine like terms: 18x + -18x = 0
7 + 3x = -8 + 0
7 + 3x = -8

Add '-7' to each side of the equation.
7 + -7 + 3x = -8 + -7

Combine like terms: 7 + -7 = 0
0 + 3x = -8 + -7
3x = -8 + -7

Combine like terms: -8 + -7 = -15
3x = -15

Divide each side by '3'.
x = -5

Simplifying
x = -5

See similar equations:

| 12x=11x+10 | | 9x+9=10x+3 | | -x=-2x+6 | | 0.25x+4.75=5.25 | | -19-s=-22 | | -7+y*y=2 | | 2x=-5x-28 | | 36+7x=99 | | 3x+6=4+2x | | 6x=31 | | log(8x)+log(2x)=3 | | y^2-12x-2y=23 | | y=2*-1*-1+1 | | 2(9w+4)= | | -24p+5p+4p= | | 6a-3=2a+17 | | 2x-5+11+4x=180 | | 25=4xy | | 9y=6-4x | | y=2*-3*-3+1 | | y=2*0*0+1 | | 5(n-7)=75 | | 20+0.75x=30 | | 5y=-3-7x | | 8y-5y-10=16 | | y=2*3*3+1 | | 13-8w=5w+2 | | 2(10x-1)-15x-8=37 | | y=2*-2*-2+1 | | -3+9x=15 | | 8y=10x+2 | | 9=2x*x+1 |

Equations solver categories