Add 21/80 and 40/50
21/80 + 40/50 is 17/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 50 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 80 × 5 = 400,
21/80 = 21 × 5/80 × 5 = 105/400 - Likewise, for the 2nd fraction, since 50 × 8 = 400,
40/50 = 40 × 8/50 × 8 = 320/400 - Add the two like fractions:
105/400 + 320/400 = 105 + 320/400 = 425/400 - 425/400 simplified gives 17/16
- So, 21/80 + 40/50 = 17/16
In mixed form: 11/16
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