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A.9x+11=6x+16
|
B.9x-11=6x-16
|
C.9x+11=6x-16
|
D.9x-11=6x+16
|
A.3x﹣2=2x+9
C.3(x﹣2)=2(x+9)
B..
D.3(x﹣2)=2x+9
A.40%(1+80%)x=48
C.80%(1+40%)x-x=48
B.x-80%(1+40%)x=48
D.80%(1-40%)x-x=48
A.
C.
B.240(x﹣12)=160x
D.240x=160(x+12)
A..3×5x+10=4×8x+2
C.
B..
D.
A.x﹣1=5×1.5x
C.3x+1=50×1.5x
B.
D.180x+1=150×1.5x
A.380-x=75
C.380+x=75
B.380-0.8x=75
D.380×0.8-x=75
A.x•40%×80%=350
C.x•40%=350×80%
B.350×40%×80%=x
D.x(1+40%)×80%=350
A.设太仓到上林的距离为x里,=5
B.设太仓到上林的距离为x里,﹣
=5
C.设重车行驶x天,50x=70(5﹣x)
D.设重车行驶x天,70x=50(5﹣x)
A.=
-9
C.+2=
B.-2=
D.=
+9
A.40%(1+80%)x=48
C.80%(1+40%)x﹣x=48
B.x﹣80%(1+40%)x=48
D.80%(1﹣40%)x﹣x=48
dyczsxyn
2024-12-20
初中数学 | 七年级上 | 选择题