Add 2/5 and 21/54
2/5 + 21/54 is 71/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 5 × 54 = 270,
2/5 = 2 × 54/5 × 54 = 108/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Add the two like fractions:
108/270 + 105/270 = 108 + 105/270 = 213/270 - 213/270 simplified gives 71/90
- So, 2/5 + 21/54 = 71/90
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