20=.80*y

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Solution for 20=.80*y equation:


Simplifying
20 = 0.80y

Solving
20 = 0.80y

Solving for variable 'y'.

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

Add '-0.80y' to each side of the equation.
20 + -0.80y = 0.80y + -0.80y

Combine like terms: 0.80y + -0.80y = 0.00
20 + -0.80y = 0.00

Add '-20' to each side of the equation.
20 + -20 + -0.80y = 0.00 + -20

Combine like terms: 20 + -20 = 0
0 + -0.80y = 0.00 + -20
-0.80y = 0.00 + -20

Combine like terms: 0.00 + -20 = -20
-0.80y = -20

Divide each side by '-0.80'.
y = 25

Simplifying
y = 25

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