3Y-3=21X

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Solution for 3Y-3=21X equation: 


Simplifying
3Y + -3 = 21X

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

Solving
-3 + 3Y = 21X

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 = 3 + 21X

Combine like terms: -3 + 3 = 0
0 + 3Y = 3 + 21X
3Y = 3 + 21X

Divide each side by '3'.
Y = 1 + 7X

Simplifying
Y = 1 + 7X

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