Subtract 42/80 from 70/7, Solve 10 0/7

Subtract 42/80 from 70/7

1^st number: 10 0/7, 2^nd number: 42/80

70/7 - 42/80 is 379/40.

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,
70/7 = 70 × 80/7 × 80 = 5600/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
42/80 = 42 × 7/80 × 7 = 294/560
Subtract the two like fractions:
5600/560 - 294/560 = 5600 - 294/560 = 5306/560
After reducing the fraction, the answer is 379/40
In mixed form: 919/40

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