Add 21/90 and 18/54
21/90 + 18/54 is 17/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 54 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 54 × 5 = 270,
18/54 = 18 × 5/54 × 5 = 90/270 - Add the two like fractions:
63/270 + 90/270 = 63 + 90/270 = 153/270 - 153/270 simplified gives 17/30
- So, 21/90 + 18/54 = 17/30
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