3(4y+9)-4(y-1)=

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Solution for 3(4y+9)-4(y-1)= equation:


Simplifying
3(4y + 9) + -4(y + -1) = 0

Reorder the terms:
3(9 + 4y) + -4(y + -1) = 0
(9 * 3 + 4y * 3) + -4(y + -1) = 0
(27 + 12y) + -4(y + -1) = 0

Reorder the terms:
27 + 12y + -4(-1 + y) = 0
27 + 12y + (-1 * -4 + y * -4) = 0
27 + 12y + (4 + -4y) = 0

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

Combine like terms: 27 + 4 = 31
31 + 12y + -4y = 0

Combine like terms: 12y + -4y = 8y
31 + 8y = 0

Solving
31 + 8y = 0

Solving for variable 'y'.

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

Add '-31' to each side of the equation.
31 + -31 + 8y = 0 + -31

Combine like terms: 31 + -31 = 0
0 + 8y = 0 + -31
8y = 0 + -31

Combine like terms: 0 + -31 = -31
8y = -31

Divide each side by '8'.
y = -3.875

Simplifying
y = -3.875

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