2+7+x=18

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Solution for 2+7+x=18 equation: 


Simplifying
2 + 7 + x = 18

Combine like terms: 2 + 7 = 9
9 + x = 18

Solving
9 + x = 18

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + x = 18 + -9

Combine like terms: 9 + -9 = 0
0 + x = 18 + -9
x = 18 + -9

Combine like terms: 18 + -9 = 9
x = 9

Simplifying
x = 9

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