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A teacher asked the class to solve the equation 3(x + 2) = 21. Robert wrote 3x + 6 = 21 as his first step. Which property did he use? (1) associative property (3) distributive p…

A teacher asked the class to solve the equation 3(x + 2) = 21. Robert wrote 3x + 6 = 21 as his first step. Which property did he use? (1) associative property (3) distributive p…
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A teacher asked the class to solve the equation 3(x + 2) = 21.

Robert wrote 3x + 6 = 21 as his first step. Which property did he use?
(1) associative property (3) distributive property
(2) commutative property (4) zero property of addition

asked
User Rene Zammit
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8.9k points

2 Answers

2 votes
Distributive property
answered
User Herman Fransen
by
7.5k points
2 votes
Distributive, he distributed the 3 among the paranthesis

answered
User Rauts
by
7.7k points
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