唔識數學方程,可不可以教我,、謝天謝地

First, you may learn some easier.
Like:
1) 2+K=8
2+K-2=8-2
K=6
2) S-7=46
S-7+7=46+7
S=53
3) 8U=96
8U/8=96/8
U=12
4) K/8=4 3/7
K/8*8=4 3/7*4
K=17 5/7
Why we SHOULD add (like 2+K-2=8-2) this thing?
It's because it'll be more easy to find out the answer!
Tips:
Add (for minus), minus (for adding) ... the opposite number and find it!

題目呢???????????????????????????

我唔色,
所以呢,
我唔知你講咩.
你叫D高手,
高人教下你啦!