Add 30/20 and 9/15
1st number: 1 10/20, 2nd number: 9/15
30/20 + 9/15 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
30/20 = 30 × 3/20 × 3 = 90/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
9/15 = 9 × 4/15 × 4 = 36/60 - Add the two like fractions:
90/60 + 36/60 = 90 + 36/60 = 126/60 - 126/60 simplified gives 21/10
- So, 30/20 + 9/15 = 21/10
In mixed form: 21/10
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