Subtract 72/49 from 2/10, Solve 2/10

Subtract 72/49 from 2/10

1^st number: 2/10, 2^nd number: 1 23/49

2/10 - 72/49 is -311/245.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 49 is 490

Next, find the equivalent fraction of both fractional numbers with denominator 490
For the 1st fraction, since 10 × 49 = 490,
2/10 = 2 × 49/10 × 49 = 98/490
Likewise, for the 2nd fraction, since 49 × 10 = 490,
72/49 = 72 × 10/49 × 10 = 720/490
Subtract the two like fractions:
98/490 - 720/490 = 98 - 720/490 = -622/490
After reducing the fraction, the answer is -311/245

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