Write the fraction in lowest terms. See Example.
EXAMPLE Writing Fractions in Lowest Terms
Write each fraction in lowest terms.
(a)
The factored form shows that 5 is the greatest common factor of 10 and 15. Dividing both numerator and denominator by 5 gives
in lowest terms as
.
(b)
By inspection, the greatest common factor of 15 and 45 is 15.
If the greatest common factor is not obvious, factor the numerator and denominator into prime factors.


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