Hello from MrBillDoesMath!
Answer: x = 10 for 4x - 8 = 32
x = -5 for 2(x-5) = -20
Discussion:
------------------------------
4x - 8 = 32 (*)
Add 8 to both sides:
4x - 8 + 8 = 32 + 8 =>
4x = 40 =>
x = 10
-----------------------------------------------
2(x-5) = 2x - 2(5) =>
2x - 10 = -20 (**)
Add 10 to each side of (**):
2x - 10 + 10 = -20 + 10 =>
2x = -10
x = -5
Thank you,
MrB
Answer:
I only see your words. Can you specify the question for me?
The formula that is useful for solving both of these problems is ...

9. Given v₁=15, a=9.8, d=10, find v₂.
... (v₂)² = 15² + 2·9.8·10
... v₂ = √421 ≈ 20.5 . . . . m/s
10. Given d=12 m when a=-9.8 m/s² and v₂=0, find d when a=0.17·(-9.8 m/s²).
The formula tells us that d=(v₁)²/(2a), which is to say that the distance is inversely proportional to the acceleration. If acceleration is 0.17 times that on earth, distance will be 1/0.17 ≈ 5.88 times that on earth.
(12 m)/0.17 ≈ 70.6 m