Add 28/7 and 4/72, Solve 4 0/7 + 4/72 as a fraction

Add 28/7 and 4/72

1^st number: 4 0/7, 2^nd number: 4/72

28/7 + 4/72 is 73/18.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 7 × 72 = 504,
28/7 = 28 × 72/7 × 72 = 2016/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
4/72 = 4 × 7/72 × 7 = 28/504
Add the two like fractions:
2016/504 + 28/504 = 2016 + 28/504 = 2044/504
2044/504 simplified gives 73/18
So, 28/7 + 4/72 = 73/18
In mixed form: 41/18

MathStep (Works offline)

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