3(1y+4)=-9

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


Simplifying
3(1y + 4) = -9

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

Solving
12 + 3y = -9

Solving for variable 'y'.

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

Add '-12' to each side of the equation.
12 + -12 + 3y = -9 + -12

Combine like terms: 12 + -12 = 0
0 + 3y = -9 + -12
3y = -9 + -12

Combine like terms: -9 + -12 = -21
3y = -21

Divide each side by '3'.
y = -7

Simplifying
y = -7

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