7=18+x

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Solution for 7=18+x equation:


Simplifying
7 = 18 + x

Solving
7 = 18 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
7 + -1x = 18 + x + -1x

Combine like terms: x + -1x = 0
7 + -1x = 18 + 0
7 + -1x = 18

Add '-7' to each side of the equation.
7 + -7 + -1x = 18 + -7

Combine like terms: 7 + -7 = 0
0 + -1x = 18 + -7
-1x = 18 + -7

Combine like terms: 18 + -7 = 11
-1x = 11

Divide each side by '-1'.
x = -11

Simplifying
x = -11

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