18+30+x=55

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Solution for 18+30+x=55 equation: 


Simplifying
18 + 30 + x = 55

Combine like terms: 18 + 30 = 48
48 + x = 55

Solving
48 + x = 55

Solving for variable 'x'.

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

Add '-48' to each side of the equation.
48 + -48 + x = 55 + -48

Combine like terms: 48 + -48 = 0
0 + x = 55 + -48
x = 55 + -48

Combine like terms: 55 + -48 = 7
x = 7

Simplifying
x = 7

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