6Y-12+3Y-6=90

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Solution for 6Y-12+3Y-6=90 equation: 


Simplifying
6Y + -12 + 3Y + -6 = 90

Reorder the terms:
-12 + -6 + 6Y + 3Y = 90

Combine like terms: -12 + -6 = -18
-18 + 6Y + 3Y = 90

Combine like terms: 6Y + 3Y = 9Y
-18 + 9Y = 90

Solving
-18 + 9Y = 90

Solving for variable 'Y'.

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

Add '18' to each side of the equation.
-18 + 18 + 9Y = 90 + 18

Combine like terms: -18 + 18 = 0
0 + 9Y = 90 + 18
9Y = 90 + 18

Combine like terms: 90 + 18 = 108
9Y = 108

Divide each side by '9'.
Y = 12

Simplifying
Y = 12

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