Add 90/2 and 81/42
1st number: 45 0/2, 2nd number: 1 39/42
90/2 + 81/42 is 657/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
90/2 = 90 × 21/2 × 21 = 1890/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
81/42 = 81 × 1/42 × 1 = 81/42 - Add the two like fractions:
1890/42 + 81/42 = 1890 + 81/42 = 1971/42 - 1971/42 simplified gives 657/14
- So, 90/2 + 81/42 = 657/14
In mixed form: 4613/14
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