Add 21/70 and 70/54
1st number: 21/70, 2nd number: 1 16/54
21/70 + 70/54 is 431/270.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 54 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
21/70 = 21 × 27/70 × 27 = 567/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
70/54 = 70 × 35/54 × 35 = 2450/1890 - Add the two like fractions:
567/1890 + 2450/1890 = 567 + 2450/1890 = 3017/1890 - 3017/1890 simplified gives 431/270
- So, 21/70 + 70/54 = 431/270
In mixed form: 1161/270
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