15-6x=-21+3x

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


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

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

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
15 + -6x + -3x = -21 + 3x + -3x

Combine like terms: -6x + -3x = -9x
15 + -9x = -21 + 3x + -3x

Combine like terms: 3x + -3x = 0
15 + -9x = -21 + 0
15 + -9x = -21

Add '-15' to each side of the equation.
15 + -15 + -9x = -21 + -15

Combine like terms: 15 + -15 = 0
0 + -9x = -21 + -15
-9x = -21 + -15

Combine like terms: -21 + -15 = -36
-9x = -36

Divide each side by '-9'.
x = 4

Simplifying
x = 4

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