Add 42/18 and 45/20
1st number: 2 6/18, 2nd number: 2 5/20
42/18 + 45/20 is 55/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
42/18 = 42 × 10/18 × 10 = 420/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
45/20 = 45 × 9/20 × 9 = 405/180 - Add the two like fractions:
420/180 + 405/180 = 420 + 405/180 = 825/180 - 825/180 simplified gives 55/12
- So, 42/18 + 45/20 = 55/12
In mixed form: 47/12
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