Subtract 45/80 from 8/7, Solve 1 1/7

Subtract 45/80 from 8/7

1^st number: 1 1/7, 2^nd number: 45/80

8/7 - 45/80 is 65/112.

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,
8/7 = 8 × 80/7 × 80 = 640/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
45/80 = 45 × 7/80 × 7 = 315/560
Subtract the two like fractions:
640/560 - 315/560 = 640 - 315/560 = 325/560
After reducing the fraction, the answer is 65/112

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