6w-18=-15-(-9w)+21

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Solution for 6w-18=-15-(-9w)+21 equation:


Simplifying
6w + -18 = -15 + -1(-9w) + 21

Reorder the terms:
-18 + 6w = -15 + -1(-9w) + 21

Remove parenthesis around (-9w)
-18 + 6w = -15 + -1 * -9w + 21

Multiply -1 * -9
-18 + 6w = -15 + 9w + 21

Reorder the terms:
-18 + 6w = -15 + 21 + 9w

Combine like terms: -15 + 21 = 6
-18 + 6w = 6 + 9w

Solving
-18 + 6w = 6 + 9w

Solving for variable 'w'.

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

Add '-9w' to each side of the equation.
-18 + 6w + -9w = 6 + 9w + -9w

Combine like terms: 6w + -9w = -3w
-18 + -3w = 6 + 9w + -9w

Combine like terms: 9w + -9w = 0
-18 + -3w = 6 + 0
-18 + -3w = 6

Add '18' to each side of the equation.
-18 + 18 + -3w = 6 + 18

Combine like terms: -18 + 18 = 0
0 + -3w = 6 + 18
-3w = 6 + 18

Combine like terms: 6 + 18 = 24
-3w = 24

Divide each side by '-3'.
w = -8

Simplifying
w = -8

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