Add 3/15 and 7/8
3/15 + 7/8 is 43/40.
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,
3/15 = 3 × 8/15 × 8 = 24/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
7/8 = 7 × 15/8 × 15 = 105/120 - Add the two like fractions:
24/120 + 105/120 = 24 + 105/120 = 129/120 - 129/120 simplified gives 43/40
- So, 3/15 + 7/8 = 43/40
In mixed form: 13/40
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