Add 24/21 and 48/27, Solve 1 3/21 + 1 21/27 as a fraction

Add 24/21 and 48/27

1^st number: 1 3/21, 2^nd number: 1 21/27

24/21 + 48/27 is 184/63.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 21 × 9 = 189,
24/21 = 24 × 9/21 × 9 = 216/189
Likewise, for the 2nd fraction, since 27 × 7 = 189,
48/27 = 48 × 7/27 × 7 = 336/189
Add the two like fractions:
216/189 + 336/189 = 216 + 336/189 = 552/189
552/189 simplified gives 184/63
So, 24/21 + 48/27 = 184/63
In mixed form: 258/63

MathStep (Works offline)

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