23+（-17）+6+（-22）
-2+3+1+（-3）+2+（-4）
23+(-73)
(-84)+(-49)
7+(-2.04)
4.23+(-7.57)
7/3)+(-7/6)
9/4+(-3/2)
3.75+(2.25)+5/4
-3.75+(+5/4)+(-1.5)
(-17/4)+(-10/3)+(+13/3)+(11/3)
(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(+1.3)-(+17/7)
(-2)-(+2/3)
|(-7.2)-(-6.3)+(1.1)|
|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
(-4)(+6)(-7)
(-27)(-25)(-3)(-4)
0.001*(-0.1)*(1.1)
24*(-5/4)*(-12/15)*(-0.12)
(-3/2)(-4/3)(-5/4)(-6/5)(-7/6)(-8/7)
(-24/7)(11/8+7/3-3.75)*24
(-71/8)*(-23)-23*(-73/8)
(-7/15)*(-18)*(-45/14)
(-2.2)*(+1.5)*(-7/11)*(-2/7)