3y-9+2(2y+5)=-3(y+1)

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Solution for 3y-9+2(2y+5)=-3(y+1) equation:


Simplifying
3y + -9 + 2(2y + 5) = -3(y + 1)

Reorder the terms:
3y + -9 + 2(5 + 2y) = -3(y + 1)
3y + -9 + (5 * 2 + 2y * 2) = -3(y + 1)
3y + -9 + (10 + 4y) = -3(y + 1)

Reorder the terms:
-9 + 10 + 3y + 4y = -3(y + 1)

Combine like terms: -9 + 10 = 1
1 + 3y + 4y = -3(y + 1)

Combine like terms: 3y + 4y = 7y
1 + 7y = -3(y + 1)

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

Solving
1 + 7y = -3 + -3y

Solving for variable 'y'.

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

Add '3y' to each side of the equation.
1 + 7y + 3y = -3 + -3y + 3y

Combine like terms: 7y + 3y = 10y
1 + 10y = -3 + -3y + 3y

Combine like terms: -3y + 3y = 0
1 + 10y = -3 + 0
1 + 10y = -3

Add '-1' to each side of the equation.
1 + -1 + 10y = -3 + -1

Combine like terms: 1 + -1 = 0
0 + 10y = -3 + -1
10y = -3 + -1

Combine like terms: -3 + -1 = -4
10y = -4

Divide each side by '10'.
y = -0.4

Simplifying
y = -0.4

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