-56=20-(-y)

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Solution for -56=20-(-y) equation:


Simplifying
-56 = 20 + -1(-1y)

Remove parenthesis around (-1y)
-56 = 20 + -1 * -1y

Multiply -1 * -1
-56 = 20 + 1y

Solving
-56 = 20 + 1y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-56 + -1y = 20 + 1y + -1y

Combine like terms: 1y + -1y = 0
-56 + -1y = 20 + 0
-56 + -1y = 20

Add '56' to each side of the equation.
-56 + 56 + -1y = 20 + 56

Combine like terms: -56 + 56 = 0
0 + -1y = 20 + 56
-1y = 20 + 56

Combine like terms: 20 + 56 = 76
-1y = 76

Divide each side by '-1'.
y = -76

Simplifying
y = -76

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