Add 21/5 and 15/54
1st number: 4 1/5, 2nd number: 15/54
21/5 + 15/54 is 403/90.
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,
21/5 = 21 × 54/5 × 54 = 1134/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
15/54 = 15 × 5/54 × 5 = 75/270 - Add the two like fractions:
1134/270 + 75/270 = 1134 + 75/270 = 1209/270 - 1209/270 simplified gives 403/90
- So, 21/5 + 15/54 = 403/90
In mixed form: 443/90
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