3(y-1)=9

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


Simplifying
3(y + -1) = 9

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

Solving
-3 + 3y = 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 + 3y = 9 + 3

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

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

Divide each side by '3'.
y = 4

Simplifying
y = 4

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