Subtract 1/80 from 42/7, Solve 6 0/7

Subtract 1/80 from 42/7

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

42/7 - 1/80 is 479/80.

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,
42/7 = 42 × 80/7 × 80 = 3360/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
1/80 = 1 × 7/80 × 7 = 7/560
Subtract the two like fractions:
3360/560 - 7/560 = 3360 - 7/560 = 3353/560
After reducing the fraction, the answer is 479/80
In mixed form: 579/80

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