Subtract 81/80 from 7/35, Solve 7/35

Subtract 81/80 from 7/35

1^st number: 7/35, 2^nd number: 1 1/80

7/35 - 81/80 is -13/16.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 80 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 35 × 16 = 560,
7/35 = 7 × 16/35 × 16 = 112/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
81/80 = 81 × 7/80 × 7 = 567/560
Subtract the two like fractions:
112/560 - 567/560 = 112 - 567/560 = -455/560
After reducing the fraction, the answer is -13/16

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