Subtract 27/16 from 28/70, Solve 28/70

Subtract 27/16 from 28/70

1^st number: 28/70, 2^nd number: 1 11/16

28/70 - 27/16 is -103/80.

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

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 70 × 8 = 560,
28/70 = 28 × 8/70 × 8 = 224/560
Likewise, for the 2nd fraction, since 16 × 35 = 560,
27/16 = 27 × 35/16 × 35 = 945/560
Subtract the two like fractions:
224/560 - 945/560 = 224 - 945/560 = -721/560
After reducing the fraction, the answer is -103/80

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