Respuesta :
Madelyn, in the simplification of the expression 3(4y) + 6 + 2y using the given steps, uses the commutative property of addition in the step 12y + 6 + 2y = 12y + 2y + 6, by commuting the term from the 3rd place to the 2nd place.
What is the commutative property of multiplication?
The order of factors in a multiplication phrase does not influence the product, according to the Commutative Property of Multiplication. Integers, fractions, decimals, exponents, and algebraic equations are all affected by the Commutative Property of Multiplication.
According to this a*b = b*a.
What is the commutative property of addition?
Changing the order of the numerals we're adding does not affect the amount, according to the commutative property of addition.
According to this a + b = b + a.
What is the associative property of multiplication?
The associative property of multiplication states that in a multiplication issue, the order in which elements are grouped does not affect the product.
According to this a*(b*c) = (a*b)*c.
What is the associative property of addition?
Changing the grouping of the addends does not modify the sum, according to the associative property of addition.
According to this a + (b + c) = (a + b) + c.
How do we solve the given question?
We are given the steps taken by Madelyn in the simplification of the expression 3(4y) + 6 + 2y.
We analyze each of her steps and check if she uses any of the stated property.
- Step 1: 3(4y) + 6 + 2y = 12y + 6 +2y. She has not used any of the stated properties. She has just multiplied 3 to 4y, by opening the parenthesis.
- Step 2: 12y + 6 + 2y = 12y + 2y + 6. She has used the commutative property of addition by making the 3rd term (2y) the second term.
- Step 3: 12y + 2y + 6 = 14y + 6. She has not used any of the stated properties. She has just added 12y to 2y to get 14y.
∴ Madelyn, in the simplification of the expression 3(4y) + 6 + 2y using the given steps, uses the commutative property of addition in the step 12y + 6 + 2y = 12y + 2y + 6, by commuting the term from the 3rd place to the 2nd place.
Learn more about the properties of addition and multiplication at
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