## Math Problem Statement

Simplify the following expression, writing your answer with only positive exponents.

y−2y−7

## Solution

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## Math Problem Analysis

### Mathematical Concepts

Exponents

Simplifying Expressions

Algebra

### Formulas

a^m / a^n = a^(m-n)

Negative exponents: a^-n = 1/a^n

### Theorems

Exponentiation rules for division

Laws of Exponents

### Suitable Grade Level

Grades 8-10

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