18x+15=9x+42

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Solution for 18x+15=9x+42 equation:


Simplifying
18x + 15 = 9x + 42

Reorder the terms:
15 + 18x = 9x + 42

Reorder the terms:
15 + 18x = 42 + 9x

Solving
15 + 18x = 42 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
15 + 18x + -9x = 42 + 9x + -9x

Combine like terms: 18x + -9x = 9x
15 + 9x = 42 + 9x + -9x

Combine like terms: 9x + -9x = 0
15 + 9x = 42 + 0
15 + 9x = 42

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

Combine like terms: 15 + -15 = 0
0 + 9x = 42 + -15
9x = 42 + -15

Combine like terms: 42 + -15 = 27
9x = 27

Divide each side by '9'.
x = 3

Simplifying
x = 3

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