9x-42+30=x+15

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Solution for 9x-42+30=x+15 equation:


Simplifying
9x + -42 + 30 = x + 15

Reorder the terms:
-42 + 30 + 9x = x + 15

Combine like terms: -42 + 30 = -12
-12 + 9x = x + 15

Reorder the terms:
-12 + 9x = 15 + x

Solving
-12 + 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.
-12 + 9x + -1x = 15 + x + -1x

Combine like terms: 9x + -1x = 8x
-12 + 8x = 15 + x + -1x

Combine like terms: x + -1x = 0
-12 + 8x = 15 + 0
-12 + 8x = 15

Add '12' to each side of the equation.
-12 + 12 + 8x = 15 + 12

Combine like terms: -12 + 12 = 0
0 + 8x = 15 + 12
8x = 15 + 12

Combine like terms: 15 + 12 = 27
8x = 27

Divide each side by '8'.
x = 3.375

Simplifying
x = 3.375

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