Add 90/27 and 21/15
1st number: 3 9/27, 2nd number: 1 6/15
90/27 + 21/15 is 71/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 15 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 27 × 5 = 135,
90/27 = 90 × 5/27 × 5 = 450/135 - Likewise, for the 2nd fraction, since 15 × 9 = 135,
21/15 = 21 × 9/15 × 9 = 189/135 - Add the two like fractions:
450/135 + 189/135 = 450 + 189/135 = 639/135 - 639/135 simplified gives 71/15
- So, 90/27 + 21/15 = 71/15
In mixed form: 411/15
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