Subtract 21/70 from 16/8, Solve 2 0/8

Subtract 21/70 from 16/8

1^st number: 2 0/8, 2^nd number: 21/70

16/8 - 21/70 is 17/10.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 70 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 8 × 35 = 280,
16/8 = 16 × 35/8 × 35 = 560/280
Likewise, for the 2nd fraction, since 70 × 4 = 280,
21/70 = 21 × 4/70 × 4 = 84/280
Subtract the two like fractions:
560/280 - 84/280 = 560 - 84/280 = 476/280
After reducing the fraction, the answer is 17/10
In mixed form: 17/10

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