Add 9/72 and 12/20
9/72 + 12/20 is 29/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
12/20 = 12 × 18/20 × 18 = 216/360 - Add the two like fractions:
45/360 + 216/360 = 45 + 216/360 = 261/360 - 261/360 simplified gives 29/40
- So, 9/72 + 12/20 = 29/40
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