Add 21/72 and 40/60
21/72 + 40/60 is 23/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 60 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Likewise, for the 2nd fraction, since 60 × 6 = 360,
40/60 = 40 × 6/60 × 6 = 240/360 - Add the two like fractions:
105/360 + 240/360 = 105 + 240/360 = 345/360 - 345/360 simplified gives 23/24
- So, 21/72 + 40/60 = 23/24
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