30+30+x+x=90

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Solution for 30+30+x+x=90 equation: 


Simplifying
30 + 30 + x + x = 90

Combine like terms: 30 + 30 = 60
60 + x + x = 90

Combine like terms: x + x = 2x
60 + 2x = 90

Solving
60 + 2x = 90

Solving for variable 'x'.

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

Add '-60' to each side of the equation.
60 + -60 + 2x = 90 + -60

Combine like terms: 60 + -60 = 0
0 + 2x = 90 + -60
2x = 90 + -60

Combine like terms: 90 + -60 = 30
2x = 30

Divide each side by '2'.
x = 15

Simplifying
x = 15

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