3*9-3y=30

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Solution for 3*9-3y=30 equation: 


Simplifying
3 * 9 + -3y = 30

Multiply 3 * 9
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 = 3
-3y = 3

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

Simplifying
y = -1

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