Add 90/3 and 15/21
1st number: 30 0/3, 2nd number: 15/21
90/3 + 15/21 is 215/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
90/3 = 90 × 7/3 × 7 = 630/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
15/21 = 15 × 1/21 × 1 = 15/21 - Add the two like fractions:
630/21 + 15/21 = 630 + 15/21 = 645/21 - 645/21 simplified gives 215/7
- So, 90/3 + 15/21 = 215/7
In mixed form: 305/7
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