x-15=(15-21)

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Solution for x-15=(15-21) equation:


Simplifying
x + -15 = (15 + -21)

Reorder the terms:
-15 + x = (15 + -21)

Combine like terms: 15 + -21 = -6
-15 + x = (-6)
-15 + x = -6

Solving
-15 + x = -6

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + x = -6 + 15

Combine like terms: -15 + 15 = 0
0 + x = -6 + 15
x = -6 + 15

Combine like terms: -6 + 15 = 9
x = 9

Simplifying
x = 9

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