Add 70/20 and 21/27
1st number: 3 10/20, 2nd number: 21/27
70/20 + 21/27 is 77/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 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 27 × 20 = 540,
21/27 = 21 × 20/27 × 20 = 420/540 - Add the two like fractions:
1890/540 + 420/540 = 1890 + 420/540 = 2310/540 - 2310/540 simplified gives 77/18
- So, 70/20 + 21/27 = 77/18
In mixed form: 45/18
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