Subtract 5/70 from 42/12, Solve 3 6/12

Subtract 5/70 from 42/12

1^st number: 3 6/12, 2^nd number: 5/70

42/12 - 5/70 is 24/7.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 12 × 35 = 420,
42/12 = 42 × 35/12 × 35 = 1470/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
5/70 = 5 × 6/70 × 6 = 30/420
Subtract the two like fractions:
1470/420 - 30/420 = 1470 - 30/420 = 1440/420
After reducing the fraction, the answer is 24/7
In mixed form: 33/7

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