arkkells arkkells

11-09-2020
Mathematics

contestada

F is between C and B. If CF = 7x+4, FB = 10x -69, and CB = 12x -25. Find x and CF

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sqdancefan sqdancefan

11-09-2020

Answer:

x = 8
CF = 60

Step-by-step explanation:

CF + FB = CB

(7x+4) +(10x-69) = (12x-25)

5x = 40 . . . . . . . . add 65-12x

x = 8 . . . . . . . . . . divide by 5

CF = 7x +4 = 7(8) +4 . . . . use the x value in the expression for CF

CF = 60

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