## Math Problem Statement

3/9 + 7 5/9

## Solution

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## Math Problem Analysis

### Mathematical Concepts

Fractions

Mixed Numbers

Addition of Fractions

### Formulas

Fraction Simplification: \( \frac{a}{b} \) where \( a \) and \( b \) are integers

Conversion of Mixed Number to Improper Fraction: \( a \frac{b}{c} = \frac{a \times c + b}{c} \)

Finding Least Common Denominator (LCD)

Addition of Fractions: \( \frac{a}{b} + \frac{c}{d} = \frac{ad + bc}{bd} \)

### Theorems

Principle of Fraction Addition

Simplification of Fractions

### Suitable Grade Level

Grade 5-7