Add 42/10 and 21/90
1st number: 4 2/10, 2nd number: 21/90
42/10 + 21/90 is 133/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
42/10 = 42 × 9/10 × 9 = 378/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90 - Add the two like fractions:
378/90 + 21/90 = 378 + 21/90 = 399/90 - 399/90 simplified gives 133/30
- So, 42/10 + 21/90 = 133/30
In mixed form: 413/30
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