Subtract 28/80 from 10/7, Solve 1 3/7

Subtract 28/80 from 10/7

1^st number: 1 3/7, 2^nd number: 28/80

10/7 - 28/80 is 151/140.

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

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 7 × 80 = 560,
10/7 = 10 × 80/7 × 80 = 800/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
28/80 = 28 × 7/80 × 7 = 196/560
Subtract the two like fractions:
800/560 - 196/560 = 800 - 196/560 = 604/560
After reducing the fraction, the answer is 151/140
In mixed form: 111/140

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