Add 21/90 and 10/25
21/90 + 10/25 is 19/30.
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,
21/90 = 21 × 5/90 × 5 = 105/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
10/25 = 10 × 18/25 × 18 = 180/450 - Add the two like fractions:
105/450 + 180/450 = 105 + 180/450 = 285/450 - 285/450 simplified gives 19/30
- So, 21/90 + 10/25 = 19/30
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