Add 63/72 and 7/40
63/72 + 7/40 is 21/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
63/72 = 63 × 5/72 × 5 = 315/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
7/40 = 7 × 9/40 × 9 = 63/360 - Add the two like fractions:
315/360 + 63/360 = 315 + 63/360 = 378/360 - 378/360 simplified gives 21/20
- So, 63/72 + 7/40 = 21/20
In mixed form: 11/20
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