Add 21/27 and 84/20, Solve 21/27 + 4 4/20 as a fraction

Add 21/27 and 84/20

1^st number: 21/27, 2^nd number: 4 4/20

21/27 + 84/20 is 224/45.

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,
84/20 = 84 × 27/20 × 27 = 2268/540
Add the two like fractions:
420/540 + 2268/540 = 420 + 2268/540 = 2688/540
2688/540 simplified gives 224/45
So, 21/27 + 84/20 = 224/45
In mixed form: 444/45

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