Add 21/30 and 30/27, Solve 21/30 + 1 3/27 as a fraction

Add 21/30 and 30/27

1^st number: 21/30, 2^nd number: 1 3/27

21/30 + 30/27 is 163/90.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 30 × 9 = 270,
21/30 = 21 × 9/30 × 9 = 189/270
Likewise, for the 2nd fraction, since 27 × 10 = 270,
30/27 = 30 × 10/27 × 10 = 300/270
Add the two like fractions:
189/270 + 300/270 = 189 + 300/270 = 489/270
489/270 simplified gives 163/90
So, 21/30 + 30/27 = 163/90
In mixed form: 173/90

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