x-7=20-18

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Solution for x-7=20-18 equation: 


Simplifying
x + -7 = 20 + -18

Reorder the terms:
-7 + x = 20 + -18

Combine like terms: 20 + -18 = 2
-7 + x = 2

Solving
-7 + x = 2

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + x = 2 + 7

Combine like terms: -7 + 7 = 0
0 + x = 2 + 7
x = 2 + 7

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

Simplifying
x = 9

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