Add 42/20 and 45/9
1st number: 2 2/20, 2nd number: 5 0/9
42/20 + 45/9 is 71/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 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 9 × 20 = 180,
45/9 = 45 × 20/9 × 20 = 900/180 - Add the two like fractions:
378/180 + 900/180 = 378 + 900/180 = 1278/180 - 1278/180 simplified gives 71/10
- So, 42/20 + 45/9 = 71/10
In mixed form: 71/10
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