9x-42=x+15

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Solution for 9x-42=x+15 equation:


Simplifying
9x + -42 = x + 15

Reorder the terms:
-42 + 9x = x + 15

Reorder the terms:
-42 + 9x = 15 + x

Solving
-42 + 9x = 15 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-42 + 9x + -1x = 15 + x + -1x

Combine like terms: 9x + -1x = 8x
-42 + 8x = 15 + x + -1x

Combine like terms: x + -1x = 0
-42 + 8x = 15 + 0
-42 + 8x = 15

Add '42' to each side of the equation.
-42 + 42 + 8x = 15 + 42

Combine like terms: -42 + 42 = 0
0 + 8x = 15 + 42
8x = 15 + 42

Combine like terms: 15 + 42 = 57
8x = 57

Divide each side by '8'.
x = 7.125

Simplifying
x = 7.125

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