-4(5y+-10)=20

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Solution for -4(5y+-10)=20 equation: 


Simplifying
-4(5y + -10) = 20

Reorder the terms:
-4(-10 + 5y) = 20
(-10 * -4 + 5y * -4) = 20
(40 + -20y) = 20

Solving
40 + -20y = 20

Solving for variable 'y'.

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

Add '-40' to each side of the equation.
40 + -40 + -20y = 20 + -40

Combine like terms: 40 + -40 = 0
0 + -20y = 20 + -40
-20y = 20 + -40

Combine like terms: 20 + -40 = -20
-20y = -20

Divide each side by '-20'.
y = 1

Simplifying
y = 1

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