Add 70/20 and 84/54
1st number: 3 10/20, 2nd number: 1 30/54
70/20 + 84/54 is 91/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 54 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
70/20 = 70 × 27/20 × 27 = 1890/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
84/54 = 84 × 10/54 × 10 = 840/540 - Add the two like fractions:
1890/540 + 840/540 = 1890 + 840/540 = 2730/540 - 2730/540 simplified gives 91/18
- So, 70/20 + 84/54 = 91/18
In mixed form: 51/18
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