-3y-1(-7y+6)=-9+2(9-y)

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Solution for -3y-1(-7y+6)=-9+2(9-y) equation:


Simplifying
-3y + -1(-7y + 6) = -9 + 2(9 + -1y)

Reorder the terms:
-3y + -1(6 + -7y) = -9 + 2(9 + -1y)
-3y + (6 * -1 + -7y * -1) = -9 + 2(9 + -1y)
-3y + (-6 + 7y) = -9 + 2(9 + -1y)

Reorder the terms:
-6 + -3y + 7y = -9 + 2(9 + -1y)

Combine like terms: -3y + 7y = 4y
-6 + 4y = -9 + 2(9 + -1y)
-6 + 4y = -9 + (9 * 2 + -1y * 2)
-6 + 4y = -9 + (18 + -2y)

Combine like terms: -9 + 18 = 9
-6 + 4y = 9 + -2y

Solving
-6 + 4y = 9 + -2y

Solving for variable 'y'.

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

Add '2y' to each side of the equation.
-6 + 4y + 2y = 9 + -2y + 2y

Combine like terms: 4y + 2y = 6y
-6 + 6y = 9 + -2y + 2y

Combine like terms: -2y + 2y = 0
-6 + 6y = 9 + 0
-6 + 6y = 9

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

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

Combine like terms: 9 + 6 = 15
6y = 15

Divide each side by '6'.
y = 2.5

Simplifying
y = 2.5

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