Add 18/15 and 25/8
1st number: 1 3/15, 2nd number: 3 1/8
18/15 + 25/8 is 173/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
18/15 = 18 × 8/15 × 8 = 144/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
25/8 = 25 × 15/8 × 15 = 375/120 - Add the two like fractions:
144/120 + 375/120 = 144 + 375/120 = 519/120 - 519/120 simplified gives 173/40
- So, 18/15 + 25/8 = 173/40
In mixed form: 413/40
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