Add 81/42 and 45/4
1st number: 1 39/42, 2nd number: 11 1/4
81/42 + 45/4 is 369/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
81/42 = 81 × 2/42 × 2 = 162/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
45/4 = 45 × 21/4 × 21 = 945/84 - Add the two like fractions:
162/84 + 945/84 = 162 + 945/84 = 1107/84 - 1107/84 simplified gives 369/28
- So, 81/42 + 45/4 = 369/28
In mixed form: 135/28
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