Add 20/21 and 50/70
20/21 + 50/70 is 5/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
20/21 = 20 × 10/21 × 10 = 200/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
50/70 = 50 × 3/70 × 3 = 150/210 - Add the two like fractions:
200/210 + 150/210 = 200 + 150/210 = 350/210 - 350/210 simplified gives 5/3
- So, 20/21 + 50/70 = 5/3
In mixed form: 12/3
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