7x+21=3x-2(x+3)

Simple and best practice solution for 7x+21=3x-2(x+3) 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 7x+21=3x-2(x+3) equation:


Simplifying
7x + 21 = 3x + -2(x + 3)

Reorder the terms:
21 + 7x = 3x + -2(x + 3)

Reorder the terms:
21 + 7x = 3x + -2(3 + x)
21 + 7x = 3x + (3 * -2 + x * -2)
21 + 7x = 3x + (-6 + -2x)

Reorder the terms:
21 + 7x = -6 + 3x + -2x

Combine like terms: 3x + -2x = 1x
21 + 7x = -6 + 1x

Solving
21 + 7x = -6 + 1x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
21 + 7x + -1x = -6 + 1x + -1x

Combine like terms: 7x + -1x = 6x
21 + 6x = -6 + 1x + -1x

Combine like terms: 1x + -1x = 0
21 + 6x = -6 + 0
21 + 6x = -6

Add '-21' to each side of the equation.
21 + -21 + 6x = -6 + -21

Combine like terms: 21 + -21 = 0
0 + 6x = -6 + -21
6x = -6 + -21

Combine like terms: -6 + -21 = -27
6x = -27

Divide each side by '6'.
x = -4.5

Simplifying
x = -4.5

See similar equations:

| 2/5÷2/9 | | f(x)=8sinx+8cosx | | -x^2-8x+5=0 | | 12=-2/5v | | 81=9+6r | | P=112x-5y | | 9x+12-24x= | | 3/4x-16=41 | | 11y-1=54 | | 11y-1=103 | | 21+19m=154 | | 26n-28=154 | | 2x+2+14x=90 | | 3x-144=164-8x | | 11x+6x-4= | | (2x^2+2)+(14x)=90 | | 6+3n=36 | | 3x^2-11x-34=0 | | (x^(1/3))^2 | | 0.15x+0.05(16-x)=0.10(-8) | | 7x-23=3x+49 | | .36(50)+0.8x=0.6(50+x) | | (X+10)(x-18)=0 | | 7x-23=3x | | 5-2(6y-2)=5(-4y+5)-2 | | 4.8s-7.6=1.2+15.8 | | y=1.4+2 | | -15x-60=-32-64 | | y=-2x+-3 | | 7x+3-9x= | | 3x-2+5x+2r-8-7x= | | 9c+14=2c^2+9c+6 |

Equations solver categories