Add 70/21 and 20/10
1st number: 3 7/21, 2nd number: 2 0/10
70/21 + 20/10 is 16/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
70/21 = 70 × 10/21 × 10 = 700/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
20/10 = 20 × 21/10 × 21 = 420/210 - Add the two like fractions:
700/210 + 420/210 = 700 + 420/210 = 1120/210 - 1120/210 simplified gives 16/3
- So, 70/21 + 20/10 = 16/3
In mixed form: 51/3
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