3[y-9]=30

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Solution for 3[y-9]=30 equation: 


Simplifying
3[y + -9] = 30

Reorder the terms:
3[-9 + y] = 30
[-9 * 3 + y * 3] = 30
[-27 + 3y] = 30

Solving
-27 + 3y = 30

Solving for variable 'y'.

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

Add '27' to each side of the equation.
-27 + 27 + 3y = 30 + 27

Combine like terms: -27 + 27 = 0
0 + 3y = 30 + 27
3y = 30 + 27

Combine like terms: 30 + 27 = 57
3y = 57

Divide each side by '3'.
y = 19

Simplifying
y = 19

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