Add 42/20 and 45/18
1st number: 2 2/20, 2nd number: 2 9/18
42/20 + 45/18 is 23/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
42/20 = 42 × 9/20 × 9 = 378/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
45/18 = 45 × 10/18 × 10 = 450/180 - Add the two like fractions:
378/180 + 450/180 = 378 + 450/180 = 828/180 - 828/180 simplified gives 23/5
- So, 42/20 + 45/18 = 23/5
In mixed form: 43/5
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