Add 45/80 and 21/36
45/80 + 21/36 is 55/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 36 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
45/80 = 45 × 9/80 × 9 = 405/720 - Likewise, for the 2nd fraction, since 36 × 20 = 720,
21/36 = 21 × 20/36 × 20 = 420/720 - Add the two like fractions:
405/720 + 420/720 = 405 + 420/720 = 825/720 - 825/720 simplified gives 55/48
- So, 45/80 + 21/36 = 55/48
In mixed form: 17/48
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