9-5y=12-(6y+7)

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Solution for 9-5y=12-(6y+7) equation:


Simplifying
9 + -5y = 12 + -1(6y + 7)

Reorder the terms:
9 + -5y = 12 + -1(7 + 6y)
9 + -5y = 12 + (7 * -1 + 6y * -1)
9 + -5y = 12 + (-7 + -6y)

Combine like terms: 12 + -7 = 5
9 + -5y = 5 + -6y

Solving
9 + -5y = 5 + -6y

Solving for variable 'y'.

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

Add '6y' to each side of the equation.
9 + -5y + 6y = 5 + -6y + 6y

Combine like terms: -5y + 6y = 1y
9 + 1y = 5 + -6y + 6y

Combine like terms: -6y + 6y = 0
9 + 1y = 5 + 0
9 + 1y = 5

Add '-9' to each side of the equation.
9 + -9 + 1y = 5 + -9

Combine like terms: 9 + -9 = 0
0 + 1y = 5 + -9
1y = 5 + -9

Combine like terms: 5 + -9 = -4
1y = -4

Divide each side by '1'.
y = -4

Simplifying
y = -4

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