3(-1)-3y=12

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Solution for 3(-1)-3y=12 equation: 


Simplifying
3(-1) + -3y = 12

Multiply 3 * -1
-3 + -3y = 12

Solving
-3 + -3y = 12

Solving for variable 'y'.

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

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

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

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

Divide each side by '-3'.
y = -5

Simplifying
y = -5

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