Add 7/20 and 3/72
7/20 + 3/72 is 47/120.
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,
7/20 = 7 × 18/20 × 18 = 126/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
3/72 = 3 × 5/72 × 5 = 15/360 - Add the two like fractions:
126/360 + 15/360 = 126 + 15/360 = 141/360 - 141/360 simplified gives 47/120
- So, 7/20 + 3/72 = 47/120
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