03-01-2020
Mathematics

contestada

-21(a + 2b) + 14a - 9b
It’s hard I’m only a 7th grader

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Yang100 Yang100

03-01-2020

Answer:

-7a-51b

Step-by-step explanation:

-21(a+2b)+14a-9b

-21a-42b+14a-9b

-21a+14a-42b-9b

-7a-42b-9b

-7a-51b

Answer Link

samanthabridges samanthabridges

03-01-2020

Answer: -7a - 51b

Step-by-step explanation:

see photo for work

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Answer Link

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