12=5-(-5-y)

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Solution for 12=5-(-5-y) equation:


Simplifying
12 = 5 + -1(-5 + -1y)
12 = 5 + (-5 * -1 + -1y * -1)
12 = 5 + (5 + 1y)

Combine like terms: 5 + 5 = 10
12 = 10 + 1y

Solving
12 = 10 + 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.
12 + -1y = 10 + 1y + -1y

Combine like terms: 1y + -1y = 0
12 + -1y = 10 + 0
12 + -1y = 10

Add '-12' to each side of the equation.
12 + -12 + -1y = 10 + -12

Combine like terms: 12 + -12 = 0
0 + -1y = 10 + -12
-1y = 10 + -12

Combine like terms: 10 + -12 = -2
-1y = -2

Divide each side by '-1'.
y = 2

Simplifying
y = 2

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