Add 21/60 and 18/72
21/60 + 18/72 is 3/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 60 × 6 = 360,
21/60 = 21 × 6/60 × 6 = 126/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
18/72 = 18 × 5/72 × 5 = 90/360 - Add the two like fractions:
126/360 + 90/360 = 126 + 90/360 = 216/360 - 216/360 simplified gives 3/5
- So, 21/60 + 18/72 = 3/5
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