Subtract 4/30 from 80/63, Solve 1 17/63

Subtract 4/30 from 80/63

1^st number: 1 17/63, 2^nd number: 4/30

80/63 - 4/30 is 358/315.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 63 × 10 = 630,
80/63 = 80 × 10/63 × 10 = 800/630
Likewise, for the 2nd fraction, since 30 × 21 = 630,
4/30 = 4 × 21/30 × 21 = 84/630
Subtract the two like fractions:
800/630 - 84/630 = 800 - 84/630 = 716/630
After reducing the fraction, the answer is 358/315
In mixed form: 143/315

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