To add or subtract fractions, you need to have a common denominator. In this case, the denominators are already the same (7).
2 6/7 - 5/7 + 1 4/7
First, we convert the mixed numbers to improper fractions:
2 6/7 = (2*7 + 6)/7 = 20/7
1 4/7 = (1*7 + 4)/7 = 11/7
Now, we can perform the calculation:
20/7 - 5/7 + 11/7 = (20 - 5 + 11)/7 = 26/7
Thus, 2 6/7 - 5/7 + 1 4/7 = 26/7.
2 6/7-5/7+1 4/7
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