Subtract 4/80 from 15/7, Solve 2 1/7

Subtract 4/80 from 15/7

1^st number: 2 1/7, 2^nd number: 4/80

15/7 - 4/80 is 293/140.

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,
15/7 = 15 × 80/7 × 80 = 1200/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
4/80 = 4 × 7/80 × 7 = 28/560
Subtract the two like fractions:
1200/560 - 28/560 = 1200 - 28/560 = 1172/560
After reducing the fraction, the answer is 293/140
In mixed form: 213/140

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