Add 48/21 and 28/20, Solve 2 6/21 + 1 8/20 as a fraction

Add 48/21 and 28/20

1^st number: 2 6/21, 2^nd number: 1 8/20

48/21 + 28/20 is 129/35.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 21 × 20 = 420,
48/21 = 48 × 20/21 × 20 = 960/420
Likewise, for the 2nd fraction, since 20 × 21 = 420,
28/20 = 28 × 21/20 × 21 = 588/420
Add the two like fractions:
960/420 + 588/420 = 960 + 588/420 = 1548/420
1548/420 simplified gives 129/35
So, 48/21 + 28/20 = 129/35
In mixed form: 324/35

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