<PRE><B>Question 518341</B>
2e+2.5c=178.5
e+30=c
2e+2.5(e+30)=178.5
2e+2.5e+2.5*30=178.5
4.5e+75=178.5
4.5e=103.5
e=103.5/4.5
e=23
c=53
check
46+2.5*53=178.5
2.5*53=132.5
106+26.5=132.5
ok
</PRE>