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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

Verified Answer :

Cham1

It is the distubitive property because he got rid of the ( )

LexiBoone

3)distributive property
Robert had given 3 to each term. which then results in 3x+6=21. Then. if he further went on, you would subtract 6 from each side giving you 15 then divide 15 by 3 giving you x=5.

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