Add 20/70 and 45/54
20/70 + 45/54 is 47/42.
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,
20/70 = 20 × 27/70 × 27 = 540/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
45/54 = 45 × 35/54 × 35 = 1575/1890 - Add the two like fractions:
540/1890 + 1575/1890 = 540 + 1575/1890 = 2115/1890 - 2115/1890 simplified gives 47/42
- So, 20/70 + 45/54 = 47/42
In mixed form: 15/42
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