-21+15=-6x+9x

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Solution for -21+15=-6x+9x equation:


Simplifying
-21 + 15 = -6x + 9x

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

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

Solving
-6 = 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.
-6 + -3x = 3x + -3x

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

Add '6' to each side of the equation.
-6 + 6 + -3x = 0 + 6

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

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

Divide each side by '-3'.
x = -2

Simplifying
x = -2

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