8w-9=13w+21

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Solution for 8w-9=13w+21 equation:


Simplifying
8w + -9 = 13w + 21

Reorder the terms:
-9 + 8w = 13w + 21

Reorder the terms:
-9 + 8w = 21 + 13w

Solving
-9 + 8w = 21 + 13w

Solving for variable 'w'.

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

Add '-13w' to each side of the equation.
-9 + 8w + -13w = 21 + 13w + -13w

Combine like terms: 8w + -13w = -5w
-9 + -5w = 21 + 13w + -13w

Combine like terms: 13w + -13w = 0
-9 + -5w = 21 + 0
-9 + -5w = 21

Add '9' to each side of the equation.
-9 + 9 + -5w = 21 + 9

Combine like terms: -9 + 9 = 0
0 + -5w = 21 + 9
-5w = 21 + 9

Combine like terms: 21 + 9 = 30
-5w = 30

Divide each side by '-5'.
w = -6

Simplifying
w = -6

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