7+11+x=30

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Solution for 7+11+x=30 equation: 


Simplifying
7 + 11 + x = 30

Combine like terms: 7 + 11 = 18
18 + x = 30

Solving
18 + x = 30

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 + x = 30 + -18

Combine like terms: 18 + -18 = 0
0 + x = 30 + -18
x = 30 + -18

Combine like terms: 30 + -18 = 12
x = 12

Simplifying
x = 12

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