Subtract 21/48 from 70/50, Solve 1 20/50

Subtract 21/48 from 70/50

1^st number: 1 20/50, 2^nd number: 21/48

70/50 - 21/48 is 77/80.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 48 is 1200

Next, find the equivalent fraction of both fractional numbers with denominator 1200
For the 1st fraction, since 50 × 24 = 1200,
70/50 = 70 × 24/50 × 24 = 1680/1200
Likewise, for the 2nd fraction, since 48 × 25 = 1200,
21/48 = 21 × 25/48 × 25 = 525/1200
Subtract the two like fractions:
1680/1200 - 525/1200 = 1680 - 525/1200 = 1155/1200
After reducing the fraction, the answer is 77/80

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