Subtract 30/63 from 80/30, Solve 2 20/30

Subtract 30/63 from 80/30

1^st number: 2 20/30, 2^nd number: 30/63

80/30 - 30/63 is 46/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 30 × 21 = 630,
80/30 = 80 × 21/30 × 21 = 1680/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
30/63 = 30 × 10/63 × 10 = 300/630
Subtract the two like fractions:
1680/630 - 300/630 = 1680 - 300/630 = 1380/630
After reducing the fraction, the answer is 46/21
In mixed form: 24/21

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