-5f-2+8-3k use f=7 and k=8
you have to plug in 7 for f and 8 for k making it look like -5(7)-2+8-3(8), now multiply to get the further more, -35-2+8-24, now add or subtract to get -53Hope this helps
-5f-2+8-3kSubstitute variables for numbers-5(7)-2+8-3(8)Multiply -5 by 7 and -3 by 8-35-2+8-24Combine like termsFinal Answer: -53
