Let's simplify and solve the given expression step-by-step:

The expression is: 
\[ 2x2 + 9(+9) - \frac{7}{9} \]

First, let's break it down:

1. **Multiply \(2 \times 2\):**
   \[ 2 \times 2 = 4 \]

2. **Evaluate \(9(+9)\):**
   \[ 9 \times 9 = 81 \]

3. **Evaluate \(- \frac{7}{9}\):**
   \[ - \frac{7}{9} \]

Now, combine these results:
\[ 4 + 81 - \frac{7}{9} \]

Next, we need to subtract \(\frac{7}{9}\) from the integer sum \(4 + 81\):

First, add the integers:
\[ 4 + 81 = 85 \]

Now, convert \(85\) into a fraction with the same denominator as \(\frac{7}{9}\):
\[ 85 = \frac{85 \times 9}{9} = \frac{765}{9} \]

Now, perform the subtraction:
\[ \frac{765}{9} - \frac{7}{9} = \frac{765 - 7}{9} = \frac{758}{9} \]

So, the simplified form of the given expression is:
\[ \frac{758}{9} \]

This fraction can also be expressed as a mixed number:
\[ 758 \div 9 = 84 \text{ R } 2 \]
So,
\[ \frac{758}{9} = 84 \frac{2}{9} \]

Would you like more details or have any questions about this solution? 

Here are five numbered questions you might consider asking:
1. How do you convert an improper fraction to a mixed number?
2. Can you explain how to simplify fractions?
3. What are the steps to evaluate expressions with parentheses?
4. How do you handle division in fractions?
5. Can you demonstrate another example with fractions?

**Tip:** Always perform operations inside parentheses first and follow the order of operations (PEMDAS/BODMAS) to ensure accurate results.

Learn how to simplify and solve the expression 2x2 + 9(+9) - 7/9 with a detailed step-by-step solution. This problem covers basic arithmetic operations, including multiplication, addition, subtraction, and fractions. Suitable for students in Grades 6-8.

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