You can put this solution on YOUR website! No. When the denominators are the same adding or subtracting
fractions is like adding or subtracting cars.
4/xy + 6/xy = 10/xy
just like
4 cars + 6 cars = 10 cars.
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Similarly
6/xy - 4/xy = 2/xy
just like
6cars - 4cars = 2cars
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cheers,
Stan H.