Add 15/30 and 81/80
1st number: 15/30, 2nd number: 1 1/80
15/30 + 81/80 is 121/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
15/30 = 15 × 8/30 × 8 = 120/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
81/80 = 81 × 3/80 × 3 = 243/240 - Add the two like fractions:
120/240 + 243/240 = 120 + 243/240 = 363/240 - 363/240 simplified gives 121/80
- So, 15/30 + 81/80 = 121/80
In mixed form: 141/80
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