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A.4(x﹣1)=2x+8
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B.4(x+1)=2x﹣8
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C.
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D..
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A.x﹣1=5×1.5x
C.3x+1=50×1.5x
B.
D.180x+1=150×1.5x
A.23-x=2×16+x
C.23+x=2×16-x
B.23-x=2(16+x)
D.23+x=2(16-x)
A.80x=2×120(42-x)
C.2×80x=120(42-x)
B.120x=2×80(42-x)
D.2×120x=80(42-x)
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.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..3×5x+10=4×8x+2
C.
B..
D.
csyn@dyw.com
2023-02-28
初中数学 | 七年级上 | 选择题