Question 231207
6*8+5x=6.8(6+x)
48+5x=40.8+6.8x
5x-6.8x=40.8-48
-1.8x=-7.2
x=-7.2/-1.8
x=4 pounds of $5 coffis used.
Proof:
6*8+5*4=6.8(6+4)
48+20=6.8*10
68=68