+(+5)=?+(-9)=?
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+(+5)=?+(-9)=?+(+5)=?+(-9)=?+(+5)=?+(-9)=?+(+5)=5;+(-5)=-5
+(+5)=?+(-9)=?
+(+5)=?
+(-9)=?
+(+5)=?+(-9)=?
+(+5)=5;+(-5)=-5
+(+5)=?+(-9)=?
5-9=5+( )=( )
9*56*5=?
8*8+6*9*9*9*9* 9*9+9-9*9*9*5*6=
从+,-,×,÷,【】中选去适当的符号添在等号左边,使等式成立5 5 5 5 5 =1 5 5 5 5 5 =3 9 9 9 9 9 =3 5 5 5 5 5 =2 5 5 5 5 5 =4 9 9 9 9 9 =20应该是9 9 9 9 9 =17
1/9=0.111111.,2/9=0.222222.,3/9=0.333333.,5/9=0.555555.,那么9/9=?
4/9+5/9= 1-5/8=
9/5+5x=10/5
45+(-9)+(-91)+5=?
45÷5/9=?
23-9x=5,
9+45+5=多少
5/3+45/9=
x:9=5:7
x/3.6=5/9
6/8-5/9=?
5x+9=19
7/3+9/5=?