72=21+2w

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Solution for 72=21+2w equation: 


Simplifying
72 = 21 + 2w

Solving
72 = 21 + 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.
72 + -2w = 21 + 2w + -2w

Combine like terms: 2w + -2w = 0
72 + -2w = 21 + 0
72 + -2w = 21

Add '-72' to each side of the equation.
72 + -72 + -2w = 21 + -72

Combine like terms: 72 + -72 = 0
0 + -2w = 21 + -72
-2w = 21 + -72

Combine like terms: 21 + -72 = -51
-2w = -51

Divide each side by '-2'.
w = 25.5

Simplifying
w = 25.5

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