Add 3/21 and 45/30, Solve 3/21 + 1 15/30 as a fraction

Add 3/21 and 45/30

1^st number: 3/21, 2^nd number: 1 15/30

3/21 + 45/30 is 23/14.

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,
3/21 = 3 × 10/21 × 10 = 30/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
45/30 = 45 × 7/30 × 7 = 315/210
Add the two like fractions:
30/210 + 315/210 = 30 + 315/210 = 345/210
345/210 simplified gives 23/14
So, 3/21 + 45/30 = 23/14
In mixed form: 19/14

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