Add 90/9 and 21/15
1st number: 10 0/9, 2nd number: 1 6/15
90/9 + 21/15 is 57/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
90/9 = 90 × 5/9 × 5 = 450/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
21/15 = 21 × 3/15 × 3 = 63/45 - Add the two like fractions:
450/45 + 63/45 = 450 + 63/45 = 513/45 - 513/45 simplified gives 57/5
- So, 90/9 + 21/15 = 57/5
In mixed form: 112/5
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