(3x+4)-(2x-2)=21

Simple and best practice solution for (3x+4)-(2x-2)=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 (3x+4)-(2x-2)=21 equation:


Simplifying
(3x + 4) + -1(2x + -2) = 21

Reorder the terms:
(4 + 3x) + -1(2x + -2) = 21

Remove parenthesis around (4 + 3x)
4 + 3x + -1(2x + -2) = 21

Reorder the terms:
4 + 3x + -1(-2 + 2x) = 21
4 + 3x + (-2 * -1 + 2x * -1) = 21
4 + 3x + (2 + -2x) = 21

Reorder the terms:
4 + 2 + 3x + -2x = 21

Combine like terms: 4 + 2 = 6
6 + 3x + -2x = 21

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

Solving
6 + 1x = 21

Solving for variable 'x'.

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

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

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

Combine like terms: 21 + -6 = 15
1x = 15

Divide each side by '1'.
x = 15

Simplifying
x = 15

See similar equations:

| 12t^2-5t+6.25=0 | | 345*457= | | 2x^2+4x-7=5 | | 7x-1=55 | | 9t^2-36t=0 | | 6x-15=-21 | | 8-3(2*-0.692307692308+7)=9*-0.692307692308-2*-0.692307692308-4 | | -3+4=-17 | | 12x+14=6x+74 | | -(1+5)(2-3a)=55 | | 1078-6x=21x+23 | | X=0.12x+72 | | x^2+32=43 | | 5x+9=75-7x | | 23(65-76)86= | | -(a+1)(4+5)=29 | | 12q^2-23q+10= | | 3w^2-5w-2= | | 3y^2-2y-8= | | 2h^2-5h+3= | | 2x-4=9x-43 | | br^2-5u-6= | | qr^2-24r+16= | | 8s^2-14s+5= | | 6x+58=11x+15 | | 6s^2+7s+1= | | 11(4x-8)=88 | | 12b^2-8b+1= | | 5(2x-9)=55 | | 2p^2-7p+3= | | 6(3x+4)=240 | | 10a^2+17a+3= |

Equations solver categories