Add 20/45 and 9/18
20/45 + 9/18 is 17/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
20/45 = 20 × 2/45 × 2 = 40/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
9/18 = 9 × 5/18 × 5 = 45/90 - Add the two like fractions:
40/90 + 45/90 = 40 + 45/90 = 85/90 - 85/90 simplified gives 17/18
- So, 20/45 + 9/18 = 17/18
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