Add 21/50 and 40/80
21/50 + 40/80 is 23/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 50 × 8 = 400,
21/50 = 21 × 8/50 × 8 = 168/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
40/80 = 40 × 5/80 × 5 = 200/400 - Add the two like fractions:
168/400 + 200/400 = 168 + 200/400 = 368/400 - 368/400 simplified gives 23/25
- So, 21/50 + 40/80 = 23/25
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