5(10s+3−2(4s−5))+11(s−5)=7s+5
5(10s+3-8s+10)+11s-55=7s+5
50s+15-40s+50+11s-55=7s+5
50s-40s+11s-7s=5-15-50+55
14s=-5
s=-5/14
s=-0.35