15+3x-15=-21+6x

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Solution for 15+3x-15=-21+6x equation:


Simplifying
15 + 3x + -15 = -21 + 6x

Reorder the terms:
15 + -15 + 3x = -21 + 6x

Combine like terms: 15 + -15 = 0
0 + 3x = -21 + 6x
3x = -21 + 6x

Solving
3x = -21 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
3x + -6x = -21 + 6x + -6x

Combine like terms: 3x + -6x = -3x
-3x = -21 + 6x + -6x

Combine like terms: 6x + -6x = 0
-3x = -21 + 0
-3x = -21

Divide each side by '-3'.
x = 7

Simplifying
x = 7

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