Add 20/36 and 15/45
20/36 + 15/45 is 8/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
20/36 = 20 × 5/36 × 5 = 100/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
15/45 = 15 × 4/45 × 4 = 60/180 - Add the two like fractions:
100/180 + 60/180 = 100 + 60/180 = 160/180 - 160/180 simplified gives 8/9
- So, 20/36 + 15/45 = 8/9
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