Add 20/60 and 21/45
20/60 + 21/45 is 4/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
20/60 = 20 × 3/60 × 3 = 60/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
21/45 = 21 × 4/45 × 4 = 84/180 - Add the two like fractions:
60/180 + 84/180 = 60 + 84/180 = 144/180 - 144/180 simplified gives 4/5
- So, 20/60 + 21/45 = 4/5
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