Add 50/21 and 4/72, Solve 2 8/21 + 4/72 as a fraction

Add 50/21 and 4/72

1^st number: 2 8/21, 2^nd number: 4/72

50/21 + 4/72 is 307/126.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 21 × 24 = 504,
50/21 = 50 × 24/21 × 24 = 1200/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
4/72 = 4 × 7/72 × 7 = 28/504
Add the two like fractions:
1200/504 + 28/504 = 1200 + 28/504 = 1228/504
1228/504 simplified gives 307/126
So, 50/21 + 4/72 = 307/126
In mixed form: 255/126

MathStep (Works offline)

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