Add 15/20 and 80/40
1st number: 15/20, 2nd number: 2 0/40
15/20 + 80/40 is 11/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
15/20 = 15 × 2/20 × 2 = 30/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
80/40 = 80 × 1/40 × 1 = 80/40 - Add the two like fractions:
30/40 + 80/40 = 30 + 80/40 = 110/40 - 110/40 simplified gives 11/4
- So, 15/20 + 80/40 = 11/4
In mixed form: 23/4
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