x=(51+x)-(9+x)

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Solution for x=(51+x)-(9+x) equation: 


Simplifying
x = (51 + x) + -1(9 + x)

Remove parenthesis around (51 + x)
x = 51 + x + -1(9 + x)
x = 51 + x + (9 * -1 + x * -1)
x = 51 + x + (-9 + -1x)

Reorder the terms:
x = 51 + -9 + x + -1x

Combine like terms: 51 + -9 = 42
x = 42 + x + -1x

Combine like terms: x + -1x = 0
x = 42 + 0
x = 42

Solving
x = 42

Solving for variable 'x'.

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

Simplifying
x = 42

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