Add 42/90 and 21/25
42/90 + 21/25 is 98/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 25 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
42/90 = 42 × 5/90 × 5 = 210/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
21/25 = 21 × 18/25 × 18 = 378/450 - Add the two like fractions:
210/450 + 378/450 = 210 + 378/450 = 588/450 - 588/450 simplified gives 98/75
- So, 42/90 + 21/25 = 98/75
In mixed form: 123/75
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