can you break down 10(f-3)=2(f-20)-50 please

10(f-3)=2(f-20)-50

 

10f-30 = 2f-40-50

10f-30 = 2f-90

10f-30+30 = 2f-90+30

10f = 2f-60

10f-2f = 2f-60-2f

8f = -60

8f /8= -60/8

f = -7 and 4/8

f = -7 and 1/2