(7y+9)-(5y-6)=

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Solution for (7y+9)-(5y-6)= equation:


Simplifying
(7y + 9) + -1(5y + -6) = 0

Reorder the terms:
(9 + 7y) + -1(5y + -6) = 0

Remove parenthesis around (9 + 7y)
9 + 7y + -1(5y + -6) = 0

Reorder the terms:
9 + 7y + -1(-6 + 5y) = 0
9 + 7y + (-6 * -1 + 5y * -1) = 0
9 + 7y + (6 + -5y) = 0

Reorder the terms:
9 + 6 + 7y + -5y = 0

Combine like terms: 9 + 6 = 15
15 + 7y + -5y = 0

Combine like terms: 7y + -5y = 2y
15 + 2y = 0

Solving
15 + 2y = 0

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 + 2y = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 2y = 0 + -15
2y = 0 + -15

Combine like terms: 0 + -15 = -15
2y = -15

Divide each side by '2'.
y = -7.5

Simplifying
y = -7.5

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