Add 21/25 and 6/90
21/25 + 6/90 is 68/75.
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,
6/90 = 6 × 5/90 × 5 = 30/450 - Add the two like fractions:
378/450 + 30/450 = 378 + 30/450 = 408/450 - 408/450 simplified gives 68/75
- So, 21/25 + 6/90 = 68/75
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