Add 21/60 and 63/72
21/60 + 63/72 is 49/40.
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,
63/72 = 63 × 5/72 × 5 = 315/360 - Add the two like fractions:
126/360 + 315/360 = 126 + 315/360 = 441/360 - 441/360 simplified gives 49/40
- So, 21/60 + 63/72 = 49/40
In mixed form: 19/40
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