Subtract 80/70 from 64/45, Solve 1 19/45

Subtract 80/70 from 64/45

1^st number: 1 19/45, 2^nd number: 1 10/70

64/45 - 80/70 is 88/315.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 45 × 14 = 630,
64/45 = 64 × 14/45 × 14 = 896/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
80/70 = 80 × 9/70 × 9 = 720/630
Subtract the two like fractions:
896/630 - 720/630 = 896 - 720/630 = 176/630
After reducing the fraction, the answer is 88/315

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