Final answer:
To solve the expression 8/9 + 8/9 - 4 7/9, find a common denominator, add the numerators, and simplify the fraction.
Step-by-step explanation:
To solve 8/9 + 8/9 - 4 7/9, we need to find a common denominator for all the fractions.
First, let's rewrite the mixed number 4 7/9 as an improper fraction. Multiply the whole number (4) by the denominator (9), which equals 36. Then add the numerator (7) to get 43.
Now, we have 8/9 + 8/9 - 43/9. To add the fractions, the denominators must be the same. Since all the fractions have a denominator of 9, we can add the numerators: 8 + 8 - 43 = -27. So the simplified answer is -27/9.