Add 12/20 and 20/72
12/20 + 20/72 is 79/90.
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,
20/72 = 20 × 5/72 × 5 = 100/360 - Add the two like fractions:
216/360 + 100/360 = 216 + 100/360 = 316/360 - 316/360 simplified gives 79/90
- So, 12/20 + 20/72 = 79/90
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