Add 42/10 and 15/45
1st number: 4 2/10, 2nd number: 15/45
42/10 + 15/45 is 68/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 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 45 × 2 = 90,
15/45 = 15 × 2/45 × 2 = 30/90 - Add the two like fractions:
378/90 + 30/90 = 378 + 30/90 = 408/90 - 408/90 simplified gives 68/15
- So, 42/10 + 15/45 = 68/15
In mixed form: 48/15
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