Subtract 63/35 from 40/12, Solve 3 4/12

Subtract 63/35 from 40/12

1^st number: 3 4/12, 2^nd number: 1 28/35

40/12 - 63/35 is 23/15.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 35 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 35 × 12 = 420,
63/35 = 63 × 12/35 × 12 = 756/420
Subtract the two like fractions:
1400/420 - 756/420 = 1400 - 756/420 = 644/420
After reducing the fraction, the answer is 23/15
In mixed form: 18/15

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