Add 24/20 and 3/81, Solve 1 4/20 + 3/81 as a fraction

Add 24/20 and 3/81

1^st number: 1 4/20, 2^nd number: 3/81

24/20 + 3/81 is 167/135.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 81 is 1620

Next, find the equivalent fraction of both fractional numbers with denominator 1620
For the 1st fraction, since 20 × 81 = 1620,
24/20 = 24 × 81/20 × 81 = 1944/1620
Likewise, for the 2nd fraction, since 81 × 20 = 1620,
3/81 = 3 × 20/81 × 20 = 60/1620
Add the two like fractions:
1944/1620 + 60/1620 = 1944 + 60/1620 = 2004/1620
2004/1620 simplified gives 167/135
So, 24/20 + 3/81 = 167/135
In mixed form: 132/135

MathStep (Works offline)

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