Add 90/8 and 15/42
1st number: 11 2/8, 2nd number: 15/42
90/8 + 15/42 is 325/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
90/8 = 90 × 21/8 × 21 = 1890/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
15/42 = 15 × 4/42 × 4 = 60/168 - Add the two like fractions:
1890/168 + 60/168 = 1890 + 60/168 = 1950/168 - 1950/168 simplified gives 325/28
- So, 90/8 + 15/42 = 325/28
In mixed form: 1117/28
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