Subtract 21/49 from 7/5, Solve 1 2/5

Subtract 21/49 from 7/5

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

7/5 - 21/49 is 34/35.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 49 is 245

Next, find the equivalent fraction of both fractional numbers with denominator 245
For the 1st fraction, since 5 × 49 = 245,
7/5 = 7 × 49/5 × 49 = 343/245
Likewise, for the 2nd fraction, since 49 × 5 = 245,
21/49 = 21 × 5/49 × 5 = 105/245
Subtract the two like fractions:
343/245 - 105/245 = 343 - 105/245 = 238/245
After reducing the fraction, the answer is 34/35

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