7(x-1)+3(x+1)=21-2x

Simple and best practice solution for 7(x-1)+3(x+1)=21-2x 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 7(x-1)+3(x+1)=21-2x equation: 


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

Reorder the terms:
7(-1 + x) + 3(x + 1) = 21 + -2x
(-1 * 7 + x * 7) + 3(x + 1) = 21 + -2x
(-7 + 7x) + 3(x + 1) = 21 + -2x

Reorder the terms:
-7 + 7x + 3(1 + x) = 21 + -2x
-7 + 7x + (1 * 3 + x * 3) = 21 + -2x
-7 + 7x + (3 + 3x) = 21 + -2x

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

Combine like terms: -7 + 3 = -4
-4 + 7x + 3x = 21 + -2x

Combine like terms: 7x + 3x = 10x
-4 + 10x = 21 + -2x

Solving
-4 + 10x = 21 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-4 + 10x + 2x = 21 + -2x + 2x

Combine like terms: 10x + 2x = 12x
-4 + 12x = 21 + -2x + 2x

Combine like terms: -2x + 2x = 0
-4 + 12x = 21 + 0
-4 + 12x = 21

Add '4' to each side of the equation.
-4 + 4 + 12x = 21 + 4

Combine like terms: -4 + 4 = 0
0 + 12x = 21 + 4
12x = 21 + 4

Combine like terms: 21 + 4 = 25
12x = 25

Divide each side by '12'.
x = 2.083333333

Simplifying
x = 2.083333333

See similar equations:

| -16-7= | | 66x=30 | | 49-2x=-7x-86 | | (7x^2+3x-1)-(7x^2+8)=12 | | 3x-4-6=-2(x-5) | | 8=20-4y+x | | 31-48= | | 22r+4=6 | | 58x=85 | | 7(x-2)=-3(x+4)+26 | | 2x+1=2(x+6) | | 29x=45 | | log(3x-7)=2 | | 9=-3(x-4)+8(x-6) | | 17+(-25)= | | x+2(-1/2x+3)=6 | | 4(5+3)-6-18=62 | | 4x-8=4x+10 | | 3(p+q)p= | | 7(y-6)+3(y+2)=54 | | 0.50x+0.40(100)=0.25(130) | | x+(-1x)=0 | | 32+1.8(20)= | | 5x-4=1.1 | | 4x-7+x-2=6x-3-x+9 | | 6(y-4)+9(y+2)=114 | | 6x-3(x-2)=21 | | 4a+20=-2a+10 | | 18=2-4y | | x-(-3)=-40 | | 86=.25xa | | 3x+2+52=90 |

Equations solver categories