Add 20/45 and 21/54
20/45 + 21/54 is 5/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 45 × 6 = 270,
20/45 = 20 × 6/45 × 6 = 120/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Add the two like fractions:
120/270 + 105/270 = 120 + 105/270 = 225/270 - 225/270 simplified gives 5/6
- So, 20/45 + 21/54 = 5/6
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