Add 15/80 and 21/18
1st number: 15/80, 2nd number: 1 3/18
15/80 + 21/18 is 65/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
15/80 = 15 × 9/80 × 9 = 135/720 - Likewise, for the 2nd fraction, since 18 × 40 = 720,
21/18 = 21 × 40/18 × 40 = 840/720 - Add the two like fractions:
135/720 + 840/720 = 135 + 840/720 = 975/720 - 975/720 simplified gives 65/48
- So, 15/80 + 21/18 = 65/48
In mixed form: 117/48
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