Subtract 25/40 from 30/49, Solve 30/49

Subtract 25/40 from 30/49

30/49 - 25/40 is -5/392.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 40 is 1960

Next, find the equivalent fraction of both fractional numbers with denominator 1960
For the 1st fraction, since 49 × 40 = 1960,
30/49 = 30 × 40/49 × 40 = 1200/1960
Likewise, for the 2nd fraction, since 40 × 49 = 1960,
25/40 = 25 × 49/40 × 49 = 1225/1960
Subtract the two like fractions:
1200/1960 - 1225/1960 = 1200 - 1225/1960 = -25/1960
After reducing the fraction, the answer is -5/392

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