2(10-y)=30

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Solution for 2(10-y)=30 equation: 


Simplifying
2(10 + -1y) = 30
(10 * 2 + -1y * 2) = 30
(20 + -2y) = 30

Solving
20 + -2y = 30

Solving for variable 'y'.

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

Add '-20' to each side of the equation.
20 + -20 + -2y = 30 + -20

Combine like terms: 20 + -20 = 0
0 + -2y = 30 + -20
-2y = 30 + -20

Combine like terms: 30 + -20 = 10
-2y = 10

Divide each side by '-2'.
y = -5

Simplifying
y = -5

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