3(5+y)=12

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Solution for 3(5+y)=12 equation: 


Simplifying
3(5 + y) = 12
(5 * 3 + y * 3) = 12
(15 + 3y) = 12

Solving
15 + 3y = 12

Solving for variable 'y'.

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

Add '-15' to each side of the equation.
15 + -15 + 3y = 12 + -15

Combine like terms: 15 + -15 = 0
0 + 3y = 12 + -15
3y = 12 + -15

Combine like terms: 12 + -15 = -3
3y = -3

Divide each side by '3'.
y = -1

Simplifying
y = -1

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