Add 21/30 and 10/27, Solve 21/30 + 10/27 as a fraction

Add 21/30 and 10/27

21/30 + 10/27 is 289/270.

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,
10/27 = 10 × 10/27 × 10 = 100/270
Add the two like fractions:
189/270 + 100/270 = 189 + 100/270 = 289/270
So, 21/30 + 10/27 = 289/270
In mixed form: 119/270

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