Subtract 21/70 from 49/16, Solve 3 1/16

Subtract 21/70 from 49/16

1^st number: 3 1/16, 2^nd number: 21/70

49/16 - 21/70 is 221/80.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 70 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 16 × 35 = 560,
49/16 = 49 × 35/16 × 35 = 1715/560
Likewise, for the 2nd fraction, since 70 × 8 = 560,
21/70 = 21 × 8/70 × 8 = 168/560
Subtract the two like fractions:
1715/560 - 168/560 = 1715 - 168/560 = 1547/560
After reducing the fraction, the answer is 221/80
In mixed form: 261/80

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