Add 15/20 and 63/72
15/20 + 63/72 is 13/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
15/20 = 15 × 18/20 × 18 = 270/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
63/72 = 63 × 5/72 × 5 = 315/360 - Add the two like fractions:
270/360 + 315/360 = 270 + 315/360 = 585/360 - 585/360 simplified gives 13/8
- So, 15/20 + 63/72 = 13/8
In mixed form: 15/8
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