9w-21=2w

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Solution for 9w-21=2w equation:


Simplifying
9w + -21 = 2w

Reorder the terms:
-21 + 9w = 2w

Solving
-21 + 9w = 2w

Solving for variable 'w'.

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

Add '-2w' to each side of the equation.
-21 + 9w + -2w = 2w + -2w

Combine like terms: 9w + -2w = 7w
-21 + 7w = 2w + -2w

Combine like terms: 2w + -2w = 0
-21 + 7w = 0

Add '21' to each side of the equation.
-21 + 21 + 7w = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 7w = 0 + 21
7w = 0 + 21

Combine like terms: 0 + 21 = 21
7w = 21

Divide each side by '7'.
w = 3

Simplifying
w = 3

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