Add 42/20 and 80/45
1st number: 2 2/20, 2nd number: 1 35/45
42/20 + 80/45 is 349/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 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 45 × 4 = 180,
80/45 = 80 × 4/45 × 4 = 320/180 - Add the two like fractions:
378/180 + 320/180 = 378 + 320/180 = 698/180 - 698/180 simplified gives 349/90
- So, 42/20 + 80/45 = 349/90
In mixed form: 379/90
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