.8w-.7w+.4w=2

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Solution for .8w-.7w+.4w=2 equation: 


Simplifying
0.8w + -0.7w + 0.4w = 2

Combine like terms: 0.8w + -0.7w = 0.1w
0.1w + 0.4w = 2

Combine like terms: 0.1w + 0.4w = 0.5w
0.5w = 2

Solving
0.5w = 2

Solving for variable 'w'.

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

Divide each side by '0.5'.
w = 4

Simplifying
w = 4

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