Add 21/90 and 20/30
21/90 + 20/30 is 9/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
20/30 = 20 × 3/30 × 3 = 60/90 - Add the two like fractions:
21/90 + 60/90 = 21 + 60/90 = 81/90 - 81/90 simplified gives 9/10
- So, 21/90 + 20/30 = 9/10
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