Math Problem Statement
Solution
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Math Problem Analysis
Mathematical Concepts
Arithmetic with fractions
Arithmetic with decimals
Negative numbers
Simplification
Formulas
Subtraction and addition of fractions: a/b - c/d = (ad - bc) / bd
Simplifying negative numbers: a - (-b) = a + b
Theorems
Properties of negative numbers
Addition and subtraction of fractions
Suitable Grade Level
Grades 7-8
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