Add 15/5 and 18/8
1st number: 3 0/5, 2nd number: 2 2/8
15/5 + 18/8 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
15/5 = 15 × 8/5 × 8 = 120/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
18/8 = 18 × 5/8 × 5 = 90/40 - Add the two like fractions:
120/40 + 90/40 = 120 + 90/40 = 210/40 - 210/40 simplified gives 21/4
- So, 15/5 + 18/8 = 21/4
In mixed form: 51/4
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