Add 21/80 and 18/60
21/80 + 18/60 is 9/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 60 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
21/80 = 21 × 3/80 × 3 = 63/240 - Likewise, for the 2nd fraction, since 60 × 4 = 240,
18/60 = 18 × 4/60 × 4 = 72/240 - Add the two like fractions:
63/240 + 72/240 = 63 + 72/240 = 135/240 - 135/240 simplified gives 9/16
- So, 21/80 + 18/60 = 9/16
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