Add 24/21 and 21/30, Solve 1 3/21 + 21/30 as a fraction

Add 24/21 and 21/30

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

24/21 + 21/30 is 129/70.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 21 × 10 = 210,
24/21 = 24 × 10/21 × 10 = 240/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
21/30 = 21 × 7/30 × 7 = 147/210
Add the two like fractions:
240/210 + 147/210 = 240 + 147/210 = 387/210
387/210 simplified gives 129/70
So, 24/21 + 21/30 = 129/70
In mixed form: 159/70

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