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08-04-2020
Mathematics

contestada

F(x)=-3x+21,find x when f(x)=6

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wegnerkolmp2741o wegnerkolmp2741o

08-04-2020

Answer:

x=5

Step-by-step explanation:

F(x)=-3x+21,

f(x)=6 = -3x+21

6 = -3x+21

Subtract 21 from each side

6-21 = -3x+21-21

-15 = -3x

Divide each side by -3

-15/-3 = -3x/-3

5 = x

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