Add 15/90 and 21/54
15/90 + 21/54 is 5/9.
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,
15/90 = 15 × 3/90 × 3 = 45/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Add the two like fractions:
45/270 + 105/270 = 45 + 105/270 = 150/270 - 150/270 simplified gives 5/9
- So, 15/90 + 21/54 = 5/9
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