3(3y+9)-4(y-3)=

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Solution for 3(3y+9)-4(y-3)= equation:


Simplifying
3(3y + 9) + -4(y + -3) = 0

Reorder the terms:
3(9 + 3y) + -4(y + -3) = 0
(9 * 3 + 3y * 3) + -4(y + -3) = 0
(27 + 9y) + -4(y + -3) = 0

Reorder the terms:
27 + 9y + -4(-3 + y) = 0
27 + 9y + (-3 * -4 + y * -4) = 0
27 + 9y + (12 + -4y) = 0

Reorder the terms:
27 + 12 + 9y + -4y = 0

Combine like terms: 27 + 12 = 39
39 + 9y + -4y = 0

Combine like terms: 9y + -4y = 5y
39 + 5y = 0

Solving
39 + 5y = 0

Solving for variable 'y'.

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

Add '-39' to each side of the equation.
39 + -39 + 5y = 0 + -39

Combine like terms: 39 + -39 = 0
0 + 5y = 0 + -39
5y = 0 + -39

Combine like terms: 0 + -39 = -39
5y = -39

Divide each side by '5'.
y = -7.8

Simplifying
y = -7.8

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