Add 20/90 and 42/10
1st number: 20/90, 2nd number: 4 2/10
20/90 + 42/10 is 199/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
42/10 = 42 × 9/10 × 9 = 378/90 - Add the two like fractions:
20/90 + 378/90 = 20 + 378/90 = 398/90 - 398/90 simplified gives 199/45
- So, 20/90 + 42/10 = 199/45
In mixed form: 419/45
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