Subtract 70/30 from 42/7, Solve 6 0/7

Subtract 70/30 from 42/7

1^st number: 6 0/7, 2^nd number: 2 10/30

42/7 - 70/30 is 11/3.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 7 × 30 = 210,
42/7 = 42 × 30/7 × 30 = 1260/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
70/30 = 70 × 7/30 × 7 = 490/210
Subtract the two like fractions:
1260/210 - 490/210 = 1260 - 490/210 = 770/210
After reducing the fraction, the answer is 11/3
In mixed form: 32/3

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