20(10-y)=30

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Solution for 20(10-y)=30 equation: 


Simplifying
20(10 + -1y) = 30
(10 * 20 + -1y * 20) = 30
(200 + -20y) = 30

Solving
200 + -20y = 30

Solving for variable 'y'.

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

Add '-200' to each side of the equation.
200 + -200 + -20y = 30 + -200

Combine like terms: 200 + -200 = 0
0 + -20y = 30 + -200
-20y = 30 + -200

Combine like terms: 30 + -200 = -170
-20y = -170

Divide each side by '-20'.
y = 8.5

Simplifying
y = 8.5

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