Add 7/20 and 4/72
7/20 + 4/72 is 73/180.
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,
4/72 = 4 × 5/72 × 5 = 20/360 - Add the two like fractions:
126/360 + 20/360 = 126 + 20/360 = 146/360 - 146/360 simplified gives 73/180
- So, 7/20 + 4/72 = 73/180
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