168-(98+z)=6570-z=65-z=-5z=5
(853+y)-53=900800+y=900y=100
(s+275)-275=384s=384
87-(41+y)=2287-41-y=2246-y=22y=46-22y=24
168-(98+z)=65
70-z=65
-z=-5
z=5
(853+y)-53=900
800+y=900
y=100
(s+275)-275=384
s=384
87-(41+y)=22
87-41-y=22
46-y=22
y=46-22
y=24