Math Problem Statement
What are the answers
Solution
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Math Problem Analysis
Mathematical Concepts
Subtraction of fractions
Addition and subtraction of decimals
Mixed numbers and improper fractions
Multiplication
Division
Formulas
Cost of one item = (Total amount paid - Change) / Number of items
Sum of fractions = a/b + c/d = (ad + bc) / bd
Addition of signed numbers
Improper fraction = Whole number + Fraction
Theorems
Fraction addition and subtraction requires a common denominator
Subtracting a negative number becomes addition
Suitable Grade Level
Grades 6-8
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