Subtract 72/49 from 5/70, Solve 5/70

Subtract 72/49 from 5/70

1^st number: 5/70, 2^nd number: 1 23/49

5/70 - 72/49 is -137/98.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 49 is 490

Next, find the equivalent fraction of both fractional numbers with denominator 490
For the 1st fraction, since 70 × 7 = 490,
5/70 = 5 × 7/70 × 7 = 35/490
Likewise, for the 2nd fraction, since 49 × 10 = 490,
72/49 = 72 × 10/49 × 10 = 720/490
Subtract the two like fractions:
35/490 - 720/490 = 35 - 720/490 = -685/490
After reducing the fraction, the answer is -137/98

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