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

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


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

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

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

Combine like terms: -2y + -3y = -5y
9 + -5y = 7 + 9(-3 + -1y)
9 + -5y = 7 + (-3 * 9 + -1y * 9)
9 + -5y = 7 + (-27 + -9y)

Combine like terms: 7 + -27 = -20
9 + -5y = -20 + -9y

Solving
9 + -5y = -20 + -9y

Solving for variable 'y'.

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

Add '9y' to each side of the equation.
9 + -5y + 9y = -20 + -9y + 9y

Combine like terms: -5y + 9y = 4y
9 + 4y = -20 + -9y + 9y

Combine like terms: -9y + 9y = 0
9 + 4y = -20 + 0
9 + 4y = -20

Add '-9' to each side of the equation.
9 + -9 + 4y = -20 + -9

Combine like terms: 9 + -9 = 0
0 + 4y = -20 + -9
4y = -20 + -9

Combine like terms: -20 + -9 = -29
4y = -29

Divide each side by '4'.
y = -7.25

Simplifying
y = -7.25

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