12x+3x-7=4x+31

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Solution for 12x+3x-7=4x+31 equation:


Simplifying
12x + 3x + -7 = 4x + 31

Reorder the terms:
-7 + 12x + 3x = 4x + 31

Combine like terms: 12x + 3x = 15x
-7 + 15x = 4x + 31

Reorder the terms:
-7 + 15x = 31 + 4x

Solving
-7 + 15x = 31 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-7 + 15x + -4x = 31 + 4x + -4x

Combine like terms: 15x + -4x = 11x
-7 + 11x = 31 + 4x + -4x

Combine like terms: 4x + -4x = 0
-7 + 11x = 31 + 0
-7 + 11x = 31

Add '7' to each side of the equation.
-7 + 7 + 11x = 31 + 7

Combine like terms: -7 + 7 = 0
0 + 11x = 31 + 7
11x = 31 + 7

Combine like terms: 31 + 7 = 38
11x = 38

Divide each side by '11'.
x = 3.454545455

Simplifying
x = 3.454545455

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