-3Y+6=6Y+-21

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Solution for -3Y+6=6Y+-21 equation:


Simplifying
-3Y + 6 = 6Y + -21

Reorder the terms:
6 + -3Y = 6Y + -21

Reorder the terms:
6 + -3Y = -21 + 6Y

Solving
6 + -3Y = -21 + 6Y

Solving for variable 'Y'.

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

Add '-6Y' to each side of the equation.
6 + -3Y + -6Y = -21 + 6Y + -6Y

Combine like terms: -3Y + -6Y = -9Y
6 + -9Y = -21 + 6Y + -6Y

Combine like terms: 6Y + -6Y = 0
6 + -9Y = -21 + 0
6 + -9Y = -21

Add '-6' to each side of the equation.
6 + -6 + -9Y = -21 + -6

Combine like terms: 6 + -6 = 0
0 + -9Y = -21 + -6
-9Y = -21 + -6

Combine like terms: -21 + -6 = -27
-9Y = -27

Divide each side by '-9'.
Y = 3

Simplifying
Y = 3

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