Add 70/21 and 18/8
1st number: 3 7/21, 2nd number: 2 2/8
70/21 + 18/8 is 67/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
70/21 = 70 × 8/21 × 8 = 560/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
18/8 = 18 × 21/8 × 21 = 378/168 - Add the two like fractions:
560/168 + 378/168 = 560 + 378/168 = 938/168 - 938/168 simplified gives 67/12
- So, 70/21 + 18/8 = 67/12
In mixed form: 57/12
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