Add 42/18 and 84/45
1st number: 2 6/18, 2nd number: 1 39/45
42/18 + 84/45 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
42/18 = 42 × 5/18 × 5 = 210/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
84/45 = 84 × 2/45 × 2 = 168/90 - Add the two like fractions:
210/90 + 168/90 = 210 + 168/90 = 378/90 - 378/90 simplified gives 21/5
- So, 42/18 + 84/45 = 21/5
In mixed form: 41/5
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