Answer:
8) v = 312
9) s = -12/13
Explanation:
8) Multiply left and right by -14, then you get
v-18 = -21*-14
v-18 = 294
Add 18 left and right:
v = 294 + 18
v = 312
9) Add 26 left and right
-13s = -14 + 26
-13s = 12
Divide left and right by -13
s = -12/13