Subtract 20/40 from 49/15, Solve 3 4/15

Subtract 20/40 from 49/15

1^st number: 3 4/15, 2^nd number: 20/40

49/15 - 20/40 is 83/30.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 15 × 8 = 120,
49/15 = 49 × 8/15 × 8 = 392/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
20/40 = 20 × 3/40 × 3 = 60/120
Subtract the two like fractions:
392/120 - 60/120 = 392 - 60/120 = 332/120
After reducing the fraction, the answer is 83/30
In mixed form: 223/30

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