7x-104=31-8x

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Solution for 7x-104=31-8x equation:


Simplifying
7x + -104 = 31 + -8x

Reorder the terms:
-104 + 7x = 31 + -8x

Solving
-104 + 7x = 31 + -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.
-104 + 7x + 8x = 31 + -8x + 8x

Combine like terms: 7x + 8x = 15x
-104 + 15x = 31 + -8x + 8x

Combine like terms: -8x + 8x = 0
-104 + 15x = 31 + 0
-104 + 15x = 31

Add '104' to each side of the equation.
-104 + 104 + 15x = 31 + 104

Combine like terms: -104 + 104 = 0
0 + 15x = 31 + 104
15x = 31 + 104

Combine like terms: 31 + 104 = 135
15x = 135

Divide each side by '15'.
x = 9

Simplifying
x = 9

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