Add 81/25 and 42/90
1st number: 3 6/25, 2nd number: 42/90
81/25 + 42/90 is 278/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
81/25 = 81 × 18/25 × 18 = 1458/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
42/90 = 42 × 5/90 × 5 = 210/450 - Add the two like fractions:
1458/450 + 210/450 = 1458 + 210/450 = 1668/450 - 1668/450 simplified gives 278/75
- So, 81/25 + 42/90 = 278/75
In mixed form: 353/75
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