Add 28/18 and 21/15
1st number: 1 10/18, 2nd number: 1 6/15
28/18 + 21/15 is 133/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
28/18 = 28 × 5/18 × 5 = 140/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
21/15 = 21 × 6/15 × 6 = 126/90 - Add the two like fractions:
140/90 + 126/90 = 140 + 126/90 = 266/90 - 266/90 simplified gives 133/45
- So, 28/18 + 21/15 = 133/45
In mixed form: 243/45
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