Answer:
I believe it is 48
Step-by-step explanation:
c=4x+5y
c-5y=4x
x=<u>c</u><u>-</u><u>5</u><u>y</u>
<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>4
hope it helps.