Respuesta :

 Multiply through                 7 -11f = 7(1-2f) +5 

 add the numbers                 -11f= 7-14f+5 

Move the variable to the left -11f=12-14f

 Collect the like terms          -11f+ 14f=12 

 Divide both sides by 3        3f=12

Answer                                F= 4
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