Add 21/90 and 18/27
21/90 + 18/27 is 9/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
21/90 = 21 × 3/90 × 3 = 63/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
18/27 = 18 × 10/27 × 10 = 180/270 - Add the two like fractions:
63/270 + 180/270 = 63 + 180/270 = 243/270 - 243/270 simplified gives 9/10
- So, 21/90 + 18/27 = 9/10
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