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Question

Write the fraction in lowest from 6390.

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Solution

Given fraction 6390
Calculate the greatest common factor (divisor), gcf (gcd)
Integer numbers prime factorization
63=32×7

90=2×32×5;

Take all common prime factors, by the lowest exponents.
gcf,gcd(63;90)=32=9

Divide both numerator and denominator by their greatest common factor.
6390=32×72×32×5

=((32×7)÷32)(2×32×5)÷32)

=7(2×5)

=710

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