Add 15/42 and 90/60
1st number: 15/42, 2nd number: 1 30/60
15/42 + 90/60 is 13/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
15/42 = 15 × 10/42 × 10 = 150/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
90/60 = 90 × 7/60 × 7 = 630/420 - Add the two like fractions:
150/420 + 630/420 = 150 + 630/420 = 780/420 - 780/420 simplified gives 13/7
- So, 15/42 + 90/60 = 13/7
In mixed form: 16/7
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