27-x=18

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Solution for 27-x=18 equation:


Simplifying
27 + -1x = 18

Solving
27 + -1x = 18

Solving for variable 'x'.

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

Add '-27' to each side of the equation.
27 + -27 + -1x = 18 + -27

Combine like terms: 27 + -27 = 0
0 + -1x = 18 + -27
-1x = 18 + -27

Combine like terms: 18 + -27 = -9
-1x = -9

Divide each side by '-1'.
x = 9

Simplifying
x = 9

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