3(-1)-4y=9

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


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

Multiply 3 * -1
-3 + -4y = 9

Solving
-3 + -4y = 9

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 + -4y = 9 + 3

Combine like terms: -3 + 3 = 0
0 + -4y = 9 + 3
-4y = 9 + 3

Combine like terms: 9 + 3 = 12
-4y = 12

Divide each side by '-4'.
y = -3

Simplifying
y = -3

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