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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.380-x=75
C.380+x=75
B.380-0.8x=75
D.380×0.8-x=75
A.40%(1+80%)x=68
C.80%(1+40%)x-x=68
B.x-80%(1+40%)x=68
D.80%(1-40%)x-x=68
A.20x=55
C.72x=6.7
B.20x=6700+12
D.72x=6.712
A.x=(x﹣5)﹣5
C.x=(x+5)+5
B.2x=(x﹣5)﹣5
D.2x=(x+5)+5
A.2×25x=40(36-x)
C.2×40x=25(36-x)
B.40x=2×25(36-x)
D.25x=2×40(36-x)
A.200x=300(x+5)
C.200(x+5)=300x
B.200x=300(x-5)
D.200(x-5)=300x
A.
C.
B.240(x﹣12)=160x
D.240x=160(x+12)
A.x﹣1=5×1.5x
C.3x+1=50×1.5x
B.
D.180x+1=150×1.5x
A..3×5x+10=4×8x+2
C.
B..
D.
dyjm2020
2021-05-13
初中数学 | 七年级上 | 选择题