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23-01-2020
Mathematics

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Use substitution to prove these algebraic expressions are equivalent 9j + 21 + 3j and 3(3j + j + 7). You may substitute any number for the variables you choose. Show all your work for complete credit.

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23-01-2020

Answer:

Let j =1

Step-by-step explanation:

9j+21+3j= 3(3j+j+7)

9j+21+3j=9j+3j+21

Since j=1,

9+21+3=9+3+21

Therefore both equations are equivalent

PLEASE MARK BRAINLIEST

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