Add 9/28 and 30/21, Solve 9/28 + 1 9/21 as a fraction

Add 9/28 and 30/21

1^st number: 9/28, 2^nd number: 1 9/21

9/28 + 30/21 is 7/4.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 28 × 3 = 84,
9/28 = 9 × 3/28 × 3 = 27/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
30/21 = 30 × 4/21 × 4 = 120/84
Add the two like fractions:
27/84 + 120/84 = 27 + 120/84 = 147/84
147/84 simplified gives 7/4
So, 9/28 + 30/21 = 7/4
In mixed form: 13/4

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