-(5y+7)-(-4y+8)=-7

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Solution for -(5y+7)-(-4y+8)=-7 equation:


Simplifying
-1(5y + 7) + -1(-4y + 8) = -7

Reorder the terms:
-1(7 + 5y) + -1(-4y + 8) = -7
(7 * -1 + 5y * -1) + -1(-4y + 8) = -7
(-7 + -5y) + -1(-4y + 8) = -7

Reorder the terms:
-7 + -5y + -1(8 + -4y) = -7
-7 + -5y + (8 * -1 + -4y * -1) = -7
-7 + -5y + (-8 + 4y) = -7

Reorder the terms:
-7 + -8 + -5y + 4y = -7

Combine like terms: -7 + -8 = -15
-15 + -5y + 4y = -7

Combine like terms: -5y + 4y = -1y
-15 + -1y = -7

Solving
-15 + -1y = -7

Solving for variable 'y'.

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

Add '15' to each side of the equation.
-15 + 15 + -1y = -7 + 15

Combine like terms: -15 + 15 = 0
0 + -1y = -7 + 15
-1y = -7 + 15

Combine like terms: -7 + 15 = 8
-1y = 8

Divide each side by '-1'.
y = -8

Simplifying
y = -8

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