Math Problem Statement
Identify the property that justifies each step asked about in the answer area below. Line 1: , left parenthesis, x, plus, 1, right parenthesis, left parenthesis, 10, plus, 9, x, right parenthesis Line 1: = (x+1)(10+9x) Line 2: , left parenthesis, x, plus, 1, right parenthesis, left parenthesis, 9, x, plus, 10, right parenthesis Line 2: = (x+1)(9x+10) Line 3: , left parenthesis, 9, x, plus, 10, right parenthesis, left parenthesis, x, plus, 1, right parenthesis Line 3: = (9x+10)(x+1)
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
Properties of Operations
Commutative Property
Formulas
(a+b)(c+d)
a + b = b + a
a * b = b * a
Theorems
Commutative Property of Addition
Commutative Property of Multiplication
Suitable Grade Level
Grades 6-8
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