Add 20/15 and 42/90
1st number: 1 5/15, 2nd number: 42/90
20/15 + 42/90 is 9/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
20/15 = 20 × 6/15 × 6 = 120/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
42/90 = 42 × 1/90 × 1 = 42/90 - Add the two like fractions:
120/90 + 42/90 = 120 + 42/90 = 162/90 - 162/90 simplified gives 9/5
- So, 20/15 + 42/90 = 9/5
In mixed form: 14/5
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