w+3.9=7.21

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Solution for w+3.9=7.21 equation: 


Simplifying
w + 3.9 = 7.21

Reorder the terms:
3.9 + w = 7.21

Solving
3.9 + w = 7.21

Solving for variable 'w'.

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

Add '-3.9' to each side of the equation.
3.9 + -3.9 + w = 7.21 + -3.9

Combine like terms: 3.9 + -3.9 = 0.0
0.0 + w = 7.21 + -3.9
w = 7.21 + -3.9

Combine like terms: 7.21 + -3.9 = 3.31
w = 3.31

Simplifying
w = 3.31

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