Subtract 10/63 from 80/70, Solve 1 10/70

Subtract 10/63 from 80/70

1^st number: 1 10/70, 2^nd number: 10/63

80/70 - 10/63 is 62/63.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 70 × 9 = 630,
80/70 = 80 × 9/70 × 9 = 720/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
10/63 = 10 × 10/63 × 10 = 100/630
Subtract the two like fractions:
720/630 - 100/630 = 720 - 100/630 = 620/630
After reducing the fraction, the answer is 62/63

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