Subtract 10/16 from 21/15, Solve 1 6/15

Subtract 10/16 from 21/15

1^st number: 1 6/15, 2^nd number: 10/16

21/15 - 10/16 is 31/40.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 16 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 15 × 16 = 240,
21/15 = 21 × 16/15 × 16 = 336/240
Likewise, for the 2nd fraction, since 16 × 15 = 240,
10/16 = 10 × 15/16 × 15 = 150/240
Subtract the two like fractions:
336/240 - 150/240 = 336 - 150/240 = 186/240
After reducing the fraction, the answer is 31/40

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