x+(9+x)=45

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Solution for x+(9+x)=45 equation:


Simplifying
x + (9 + x) = 45

Remove parenthesis around (9 + x)
x + 9 + x = 45

Reorder the terms:
9 + x + x = 45

Combine like terms: x + x = 2x
9 + 2x = 45

Solving
9 + 2x = 45

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 + 2x = 45 + -9

Combine like terms: 9 + -9 = 0
0 + 2x = 45 + -9
2x = 45 + -9

Combine like terms: 45 + -9 = 36
2x = 36

Divide each side by '2'.
x = 18

Simplifying
x = 18

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