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04-02-2020
Mathematics

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F(7)+x F=2x+5x how do i solve this?? Someone please help exam tmrw

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04-02-2020

Answer:

49-7F

Step-by-step explanation:

F(7)+xF=2x+5x

F(7)+xF=7x

F(7)=7x-xF

F(7)=x(7-F)

substitute x=7 in the equation above

Therefore, 7(7-F)

=49-7F

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