Respuesta :

Answer:

f=5

Step-by-step explanation:

4(f-3)=20     distribute

4f-12=20      add

4f-12+12=20+12... 4f=32   divide

4f/4=20/4..... f=5

Answer:

F=8

Step-by-step explanation:

DIVIDE BOTH SIDES BY 4

4(f-3)=20     Dividing 4(f-3) by 4 cancels out the 4 leaving it f-3

                    Dividing 20 by 4 =5

f-3=5   move the constant to the right  (constant is the 5)

f=5+3   calculate

f=8

This is correct :)