Add 12/20 and 28/72
12/20 + 28/72 is 89/90.
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,
12/20 = 12 × 18/20 × 18 = 216/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
28/72 = 28 × 5/72 × 5 = 140/360 - Add the two like fractions:
216/360 + 140/360 = 216 + 140/360 = 356/360 - 356/360 simplified gives 89/90
- So, 12/20 + 28/72 = 89/90
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