Subtract 25/20 from 70/49, Solve 1 21/49

Subtract 25/20 from 70/49

1^st number: 1 21/49, 2^nd number: 1 5/20

70/49 - 25/20 is 5/28.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980

Next, find the equivalent fraction of both fractional numbers with denominator 980
For the 1st fraction, since 49 × 20 = 980,
70/49 = 70 × 20/49 × 20 = 1400/980
Likewise, for the 2nd fraction, since 20 × 49 = 980,
25/20 = 25 × 49/20 × 49 = 1225/980
Subtract the two like fractions:
1400/980 - 1225/980 = 1400 - 1225/980 = 175/980
After reducing the fraction, the answer is 5/28

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