Subtract 60/42 from 15/4, Solve 3 3/4

Subtract 60/42 from 15/4

1^st number: 3 3/4, 2^nd number: 1 18/42

15/4 - 60/42 is 65/28.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 4 × 21 = 84,
15/4 = 15 × 21/4 × 21 = 315/84
Likewise, for the 2nd fraction, since 42 × 2 = 84,
60/42 = 60 × 2/42 × 2 = 120/84
Subtract the two like fractions:
315/84 - 120/84 = 315 - 120/84 = 195/84
After reducing the fraction, the answer is 65/28
In mixed form: 29/28

MathStep (Works offline)

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