20x-18-5x=42

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Solution for 20x-18-5x=42 equation:


Simplifying
20x + -18 + -5x = 42

Reorder the terms:
-18 + 20x + -5x = 42

Combine like terms: 20x + -5x = 15x
-18 + 15x = 42

Solving
-18 + 15x = 42

Solving for variable 'x'.

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

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

Combine like terms: -18 + 18 = 0
0 + 15x = 42 + 18
15x = 42 + 18

Combine like terms: 42 + 18 = 60
15x = 60

Divide each side by '15'.
x = 4

Simplifying
x = 4

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