Subtract 80/70 from 15/16, Solve 15/16

Subtract 80/70 from 15/16

1^st number: 15/16, 2^nd number: 1 10/70

15/16 - 80/70 is -23/112.

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,
15/16 = 15 × 35/16 × 35 = 525/560
Likewise, for the 2nd fraction, since 70 × 8 = 560,
80/70 = 80 × 8/70 × 8 = 640/560
Subtract the two like fractions:
525/560 - 640/560 = 525 - 640/560 = -115/560
After reducing the fraction, the answer is -23/112

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