Add 10/8 and 70/21
1st number: 1 2/8, 2nd number: 3 7/21
10/8 + 70/21 is 55/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
10/8 = 10 × 21/8 × 21 = 210/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
70/21 = 70 × 8/21 × 8 = 560/168 - Add the two like fractions:
210/168 + 560/168 = 210 + 560/168 = 770/168 - 770/168 simplified gives 55/12
- So, 10/8 + 70/21 = 55/12
In mixed form: 47/12
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