Add 42/90 and 21/10
1st number: 42/90, 2nd number: 2 1/10
42/90 + 21/10 is 77/30.
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,
42/90 = 42 × 1/90 × 1 = 42/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
21/10 = 21 × 9/10 × 9 = 189/90 - Add the two like fractions:
42/90 + 189/90 = 42 + 189/90 = 231/90 - 231/90 simplified gives 77/30
- So, 42/90 + 21/10 = 77/30
In mixed form: 217/30
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