GRE
||x| – |y||
|x – y|
|$$m$$| - |-$$k$$|
|$$k$$| - |-$$m$$|
x
0
$$x$$
$$6$$
k
r
|a+b|
5
x-3
y
$$x^{2}$$
9
a% of r
b% of 4r
$$\frac{1}{2}$$ of $$\frac{1}{5}$$of x
8% of x
$$\frac{1}{5}$$ percent of 50
10
$$\frac{1}{5}$$ percent of 59
0.2
$$\frac{1}{9}$$ of x
11% of x
The tax John paid on the suit
$$\frac{sr}{100}$$
25000 +道题目
6本备考书籍