ax & gt2x+5

ax-2x & gt； five

(a-2)x & gt； five

Because of a man

So a-2

So if both sides of the inequality are divided by a-2 at the same time, the inequality must be changed.

X<5 people

2.

If you can buy x pens, buy a 30-x notebook.

2(30-x)+5x≤ 100

60-2x+5x≤ 100

3x≤40

x≤40/3

X is a positive integer

So x≤ 13.

So you can buy 13 at most.