Add 18/4 and 45/42
1st number: 4 2/4, 2nd number: 1 3/42
18/4 + 45/42 is 39/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
18/4 = 18 × 21/4 × 21 = 378/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
45/42 = 45 × 2/42 × 2 = 90/84 - Add the two like fractions:
378/84 + 90/84 = 378 + 90/84 = 468/84 - 468/84 simplified gives 39/7
- So, 18/4 + 45/42 = 39/7
In mixed form: 54/7
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