1) 168 - (98 + z) = 65168 - 98 - z = 6570 - z = 65-z = 65 - 70-z = -5z = 5
2) (s + 275) - 275 = 384s + 275 - 275 = 384s = 384
1) 168 - (98 + z) = 65
168 - 98 - z = 65
70 - z = 65
-z = 65 - 70
-z = -5
z = 5
2) (s + 275) - 275 = 384
s + 275 - 275 = 384
s = 384