Subtract 7/70 from 40/12, Solve 3 4/12

Subtract 7/70 from 40/12

1^st number: 3 4/12, 2^nd number: 7/70

40/12 - 7/70 is 97/30.

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,
40/12 = 40 × 35/12 × 35 = 1400/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
7/70 = 7 × 6/70 × 6 = 42/420
Subtract the two like fractions:
1400/420 - 42/420 = 1400 - 42/420 = 1358/420
After reducing the fraction, the answer is 97/30
In mixed form: 37/30

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