Subtract 42/7 from 5/80, Solve 5/80

Subtract 42/7 from 5/80

1^st number: 5/80, 2^nd number: 6 0/7

5/80 - 42/7 is -95/16.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 7 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 80 × 7 = 560,
5/80 = 5 × 7/80 × 7 = 35/560
Likewise, for the 2nd fraction, since 7 × 80 = 560,
42/7 = 42 × 80/7 × 80 = 3360/560
Subtract the two like fractions:
35/560 - 3360/560 = 35 - 3360/560 = -3325/560
After reducing the fraction, the answer is -95/16

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