138-(7x+12)=7(x+3)+x

Simple and best practice solution for 138-(7x+12)=7(x+3)+x 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 138-(7x+12)=7(x+3)+x equation:


Simplifying
138 + -1(7x + 12) = 7(x + 3) + x

Reorder the terms:
138 + -1(12 + 7x) = 7(x + 3) + x
138 + (12 * -1 + 7x * -1) = 7(x + 3) + x
138 + (-12 + -7x) = 7(x + 3) + x

Combine like terms: 138 + -12 = 126
126 + -7x = 7(x + 3) + x

Reorder the terms:
126 + -7x = 7(3 + x) + x
126 + -7x = (3 * 7 + x * 7) + x
126 + -7x = (21 + 7x) + x

Combine like terms: 7x + x = 8x
126 + -7x = 21 + 8x

Solving
126 + -7x = 21 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
126 + -7x + -8x = 21 + 8x + -8x

Combine like terms: -7x + -8x = -15x
126 + -15x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
126 + -15x = 21 + 0
126 + -15x = 21

Add '-126' to each side of the equation.
126 + -126 + -15x = 21 + -126

Combine like terms: 126 + -126 = 0
0 + -15x = 21 + -126
-15x = 21 + -126

Combine like terms: 21 + -126 = -105
-15x = -105

Divide each side by '-15'.
x = 7

Simplifying
x = 7

See similar equations:

| g(x)=-5x+6x^2-1 | | 36+a^2=256 | | 1/2(30x-4) | | lnx^11=lnx^2+30 | | 36+a^2=64 | | 25+a^2=121 | | 81+a^2=100 | | -4x+4y=-1 | | 5x-x-100=0 | | 256+a^2=361 | | 5p-40=p | | 100+a^2=81 | | 25+a^2=49 | | y=.5x^3-2x+2.5 | | 4+a^2=49 | | 4+a^2=25 | | 2n^3+2n-4=0 | | -8(a+5)=28 | | 169+a^2=289 | | 3x^2+14=24 | | 5x+5y-x+2y= | | -8/26-(-3/26) | | -4x^4+4x^3+64x^2+80x=0 | | 9+a^2=49 | | -4/13-(-3/26) | | fraction=decimal | | 6(3s+5)=192 | | 4+a^2=9 | | 64+a^2=121 | | 8x-5=14x+10 | | 15x-2y-5x-6y= | | 2x^5-68x^3+450x=0 |

Equations solver categories