2x+(x+42)=90

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Solution for 2x+(x+42)=90 equation:


Simplifying
2x + (x + 42) = 90

Reorder the terms:
2x + (42 + x) = 90

Remove parenthesis around (42 + x)
2x + 42 + x = 90

Reorder the terms:
42 + 2x + x = 90

Combine like terms: 2x + x = 3x
42 + 3x = 90

Solving
42 + 3x = 90

Solving for variable 'x'.

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

Add '-42' to each side of the equation.
42 + -42 + 3x = 90 + -42

Combine like terms: 42 + -42 = 0
0 + 3x = 90 + -42
3x = 90 + -42

Combine like terms: 90 + -42 = 48
3x = 48

Divide each side by '3'.
x = 16

Simplifying
x = 16

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