42-2x=7x+15

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Solution for 42-2x=7x+15 equation:


Simplifying
42 + -2x = 7x + 15

Reorder the terms:
42 + -2x = 15 + 7x

Solving
42 + -2x = 15 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
42 + -2x + -7x = 15 + 7x + -7x

Combine like terms: -2x + -7x = -9x
42 + -9x = 15 + 7x + -7x

Combine like terms: 7x + -7x = 0
42 + -9x = 15 + 0
42 + -9x = 15

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

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

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

Divide each side by '-9'.
x = 3

Simplifying
x = 3

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