Subtract 15/30 from 40/49, Solve 40/49

Subtract 15/30 from 40/49

40/49 - 15/30 is 31/98.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 30 is 1470

Next, find the equivalent fraction of both fractional numbers with denominator 1470
For the 1st fraction, since 49 × 30 = 1470,
40/49 = 40 × 30/49 × 30 = 1200/1470
Likewise, for the 2nd fraction, since 30 × 49 = 1470,
15/30 = 15 × 49/30 × 49 = 735/1470
Subtract the two like fractions:
1200/1470 - 735/1470 = 1200 - 735/1470 = 465/1470
After reducing the fraction, the answer is 31/98

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