30=18+x+(12-x)

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Solution for 30=18+x+(12-x) equation:


Simplifying
30 = 18 + x + (12 + -1x)

Remove parenthesis around (12 + -1x)
30 = 18 + x + 12 + -1x

Reorder the terms:
30 = 18 + 12 + x + -1x

Combine like terms: 18 + 12 = 30
30 = 30 + x + -1x

Combine like terms: x + -1x = 0
30 = 30 + 0
30 = 30

Add '-30' to each side of the equation.
30 + -30 = 30 + -30

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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