Add 21/27 and 28/20, Solve 21/27 + 1 8/20 as a fraction

Add 21/27 and 28/20

1^st number: 21/27, 2^nd number: 1 8/20

21/27 + 28/20 is 98/45.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540

Next, find the equivalent fraction of both fractional numbers with denominator 540
For the 1st fraction, since 27 × 20 = 540,
21/27 = 21 × 20/27 × 20 = 420/540
Likewise, for the 2nd fraction, since 20 × 27 = 540,
28/20 = 28 × 27/20 × 27 = 756/540
Add the two like fractions:
420/540 + 756/540 = 420 + 756/540 = 1176/540
1176/540 simplified gives 98/45
So, 21/27 + 28/20 = 98/45
In mixed form: 28/45

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