Subtract 25/70 from 10/49, Solve 10/49

Subtract 25/70 from 10/49

10/49 - 25/70 is -15/98.

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

Next, find the equivalent fraction of both fractional numbers with denominator 490
For the 1st fraction, since 49 × 10 = 490,
10/49 = 10 × 10/49 × 10 = 100/490
Likewise, for the 2nd fraction, since 70 × 7 = 490,
25/70 = 25 × 7/70 × 7 = 175/490
Subtract the two like fractions:
100/490 - 175/490 = 100 - 175/490 = -75/490
After reducing the fraction, the answer is -15/98

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