Add 21/54 and 42/10
1st number: 21/54, 2nd number: 4 2/10
21/54 + 42/10 is 413/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 10 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Likewise, for the 2nd fraction, since 10 × 27 = 270,
42/10 = 42 × 27/10 × 27 = 1134/270 - Add the two like fractions:
105/270 + 1134/270 = 105 + 1134/270 = 1239/270 - 1239/270 simplified gives 413/90
- So, 21/54 + 42/10 = 413/90
In mixed form: 453/90
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