you have to multiply numerators and denominators because whatever you do to the bottom you have to do to the top
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Exactly the same as you do when multiplying fractions with different denominators. -- Multiply numerators . . . the product is the numeratore of the answer. -- Multiply denominators . . . the product is the denominator of the answer.
you subtract the numerators, and leeave the denomonators alone
The denominators must be the same, the numerators can be different.
It stays the same. Only the numerators change.
this is a tricky question but the relationship between the numerators of the product is that they both fractions - and for the next question is that in some fraction their is aways going to have the same denominator that never changes or DONT CHANGE AT ALL !