Subtract 5/45 from 42/16, Solve 2 10/16

Subtract 5/45 from 42/16

1^st number: 2 10/16, 2^nd number: 5/45

42/16 - 5/45 is 181/72.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 45 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 16 × 45 = 720,
42/16 = 42 × 45/16 × 45 = 1890/720
Likewise, for the 2nd fraction, since 45 × 16 = 720,
5/45 = 5 × 16/45 × 16 = 80/720
Subtract the two like fractions:
1890/720 - 80/720 = 1890 - 80/720 = 1810/720
After reducing the fraction, the answer is 181/72
In mixed form: 237/72

MathStep (Works offline)

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