0.20w+0.60(20-w)=10

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Solution for 0.20w+0.60(20-w)=10 equation: 


Simplifying
0.20w + 0.60(20 + -1w) = 10
0.20w + (20 * 0.60 + -1w * 0.60) = 10
0.20w + (12 + -0.6w) = 10

Reorder the terms:
12 + 0.20w + -0.6w = 10

Combine like terms: 0.20w + -0.6w = -0.4w
12 + -0.4w = 10

Solving
12 + -0.4w = 10

Solving for variable 'w'.

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

Add '-12' to each side of the equation.
12 + -12 + -0.4w = 10 + -12

Combine like terms: 12 + -12 = 0
0 + -0.4w = 10 + -12
-0.4w = 10 + -12

Combine like terms: 10 + -12 = -2
-0.4w = -2

Divide each side by '-0.4'.
w = 5

Simplifying
w = 5

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