Subtract 18/63 from 72/30, Solve 2 12/30

Subtract 18/63 from 72/30

1^st number: 2 12/30, 2^nd number: 18/63

72/30 - 18/63 is 74/35.

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,
72/30 = 72 × 21/30 × 21 = 1512/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
18/63 = 18 × 10/63 × 10 = 180/630
Subtract the two like fractions:
1512/630 - 180/630 = 1512 - 180/630 = 1332/630
After reducing the fraction, the answer is 74/35
In mixed form: 24/35

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