Subtract 2/40 from 49/12, Solve 4 1/12

Subtract 2/40 from 49/12

1^st number: 4 1/12, 2^nd number: 2/40

49/12 - 2/40 is 121/30.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 12 × 10 = 120,
49/12 = 49 × 10/12 × 10 = 490/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
2/40 = 2 × 3/40 × 3 = 6/120
Subtract the two like fractions:
490/120 - 6/120 = 490 - 6/120 = 484/120
After reducing the fraction, the answer is 121/30
In mixed form: 41/30

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad