Subtract 80/49 from 10/15, Solve 10/15

Subtract 80/49 from 10/15

1^st number: 10/15, 2^nd number: 1 31/49

10/15 - 80/49 is -142/147.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 49 is 735

Next, find the equivalent fraction of both fractional numbers with denominator 735
For the 1st fraction, since 15 × 49 = 735,
10/15 = 10 × 49/15 × 49 = 490/735
Likewise, for the 2nd fraction, since 49 × 15 = 735,
80/49 = 80 × 15/49 × 15 = 1200/735
Subtract the two like fractions:
490/735 - 1200/735 = 490 - 1200/735 = -710/735
After reducing the fraction, the answer is -142/147

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