Add 90/8 and 20/42
1st number: 11 2/8, 2nd number: 20/42
90/8 + 20/42 is 985/84.
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,
20/42 = 20 × 4/42 × 4 = 80/168 - Add the two like fractions:
1890/168 + 80/168 = 1890 + 80/168 = 1970/168 - 1970/168 simplified gives 985/84
- So, 90/8 + 20/42 = 985/84
In mixed form: 1161/84
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