x + x/2+1 + x/4+1.5 + x/8+1.75 = 38,
(x+x/2+x/4+x/8)+(1+1.5+1.75)=38
x(1+1/2+1/4+1/8)+4.25=38
1.875x=38-4.25
1.875x=33.75
x=18