7-5=-(5-y)

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Solution for 7-5=-(5-y) equation:


Simplifying
7 + -5 = -1(5 + -1y)

Combine like terms: 7 + -5 = 2
2 = -1(5 + -1y)
2 = (5 * -1 + -1y * -1)
2 = (-5 + 1y)

Solving
2 = -5 + 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.
2 + -1y = -5 + 1y + -1y

Combine like terms: 1y + -1y = 0
2 + -1y = -5 + 0
2 + -1y = -5

Add '-2' to each side of the equation.
2 + -2 + -1y = -5 + -2

Combine like terms: 2 + -2 = 0
0 + -1y = -5 + -2
-1y = -5 + -2

Combine like terms: -5 + -2 = -7
-1y = -7

Divide each side by '-1'.
y = 7

Simplifying
y = 7

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