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Mathematics 9 Online
OpenStudy (anonymous):

simplify. 3(2x + 4y - 2z) + 7(x + y - 4z) A) 13x + 5y - 22z B) -x - 19y + 22z C) 13x + 19y - 34z D) -x - 5y + 34z

OpenStudy (anonymous):

You want to multiply 3 in the first bracket and 7 in the second bracket. If you do that, then you get: \[6x+12y-6z+7x+7y-28z\] From here then you should be able to simplify it yourself?

OpenStudy (phebe):

13 x+19 y-34 z

OpenStudy (anonymous):

thx @Phebe

OpenStudy (phebe):

WELCOME! :D TO OPENSTUDY

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