1/7*()=()÷1/13=()*0.875=()*75%=13又9/26-()=2
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1/7*()=()÷1/13=()*0.875=()*75%=13又9/26-()=2
1/7*()=()÷1/13=()*0.875=()*75%=13又9/26-()=2
1/7*()=()÷1/13=()*0.875=()*75%=13又9/26-()=2
1/7*(14)=(2/13)÷1/13=(16/7 )*0.875=(8/3 )*75%=13又9/26-(11又9/26)=2
1/7*(14)=(2/13)÷1/13=(16/7)*0.875=(8/3)*75%=13又9/26-(11又9/26)=2
1/7*(14)=(2/13)÷1/13=(16/7)*0.875=(8/3)*75%=13又9/26-(11又9/26)=2
1/7*(14)=(2/13)÷1/13=(16/7)*0.875=(8/3)*75%=13又9/26-(11又9/26)=2
1/6×()=7/13×()=4/7÷()=3/2-()=1
填空:1/7×()=()÷1/13=0.875×()=()×75%=13又9/26-()=1
7分之1×()=()÷13分之1=()×0.875=()×75%=13又26分之9-()=2
1/7*()=()÷1/13=()*0.875=()*75%=13又9/26-()=2
6分之1×()=13分之7÷()=13分之17减()=()+4分之1=1
6÷( )=7分之1
-13÷2*3÷(-1/3)÷(-5)×(-1^8)=?、、
用简便方法计算:13分之7除以7加7分之一乘以13分之67/13÷7+1/7×6/13(简便计算)=
1-1/8÷3/8( )7/11÷14 ( )3/8*4/9( )1÷25 %( )9/7÷3( )10%*5*100%( )21*(2/3-1/7)=( ) 4-11/13÷11/13( )2/3*3/10÷2/3×3/10( )(急)
1/8乘( )=1/13÷( )=( )+8/21=29/4减( )=1
-2×3×(-4)= -6×(-5) ×(-7)=-2×3×(-4)= -6×(-5) ×(-7)= (-25/8)×1.25×(-8)= 0.1÷(-0.001)÷(-1)= (-4/3)×(-1哟2/1)÷(-2哟4/1)= -6×(-0.25)×14/11= (-7)×(-56)×0÷(-13)=
12/5×8/3=()÷24/13=()×3/1=()÷26/1=() 2/1×3/1=()÷2/1=()÷9/4=()×18/7=()帮帮哈~
1.3x+2y=442x+3y=46x=?y=?( )2.(13.5-81/4-4.75)÷【11/2(A+13/4÷ 11/7)】=1/302.13.5-81/4-4.75)÷【11/2(A+13/4÷ 11/7)】=1/30A+1又3/4÷11/7
1/6*( )=7/13*( )=17/13=( )=( )+3/5=1
3/4×()=2/7÷()=()×0.2=3-()=()+1/5=1
已知a= - 1/2,b=-7,c= - 13/4,试求 (1)ab÷(-c) (2)-b-c/a
(5+x)÷(13+x)=1÷2
(-4)÷( )=-8 ( )÷(-1/3) =-3 (-14)÷( )=56 (-7/8)÷( )=-1