(-5y+5)-(-4y-7)=-1

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Solution for (-5y+5)-(-4y-7)=-1 equation:


Simplifying
(-5y + 5) + -1(-4y + -7) = -1

Reorder the terms:
(5 + -5y) + -1(-4y + -7) = -1

Remove parenthesis around (5 + -5y)
5 + -5y + -1(-4y + -7) = -1

Reorder the terms:
5 + -5y + -1(-7 + -4y) = -1
5 + -5y + (-7 * -1 + -4y * -1) = -1
5 + -5y + (7 + 4y) = -1

Reorder the terms:
5 + 7 + -5y + 4y = -1

Combine like terms: 5 + 7 = 12
12 + -5y + 4y = -1

Combine like terms: -5y + 4y = -1y
12 + -1y = -1

Solving
12 + -1y = -1

Solving for variable 'y'.

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

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

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

Combine like terms: -1 + -12 = -13
-1y = -13

Divide each side by '-1'.
y = 13

Simplifying
y = 13

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