Add 21/25 and 30/90
21/25 + 30/90 is 88/75.
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,
21/25 = 21 × 18/25 × 18 = 378/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
30/90 = 30 × 5/90 × 5 = 150/450 - Add the two like fractions:
378/450 + 150/450 = 378 + 150/450 = 528/450 - 528/450 simplified gives 88/75
- So, 21/25 + 30/90 = 88/75
In mixed form: 113/75
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