Subtract 3/10 from 42/7, Solve 6 0/7

Subtract 3/10 from 42/7

1^st number: 6 0/7, 2^nd number: 3/10

42/7 - 3/10 is 57/10.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70

Next, find the equivalent fraction of both fractional numbers with denominator 70
For the 1st fraction, since 7 × 10 = 70,
42/7 = 42 × 10/7 × 10 = 420/70
Likewise, for the 2nd fraction, since 10 × 7 = 70,
3/10 = 3 × 7/10 × 7 = 21/70
Subtract the two like fractions:
420/70 - 21/70 = 420 - 21/70 = 399/70
After reducing the fraction, the answer is 57/10
In mixed form: 57/10

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