Add 28/40 and 9/15
28/40 + 9/15 is 13/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
28/40 = 28 × 3/40 × 3 = 84/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
9/15 = 9 × 8/15 × 8 = 72/120 - Add the two like fractions:
84/120 + 72/120 = 84 + 72/120 = 156/120 - 156/120 simplified gives 13/10
- So, 28/40 + 9/15 = 13/10
In mixed form: 13/10
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