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A.40%(1+80%)x=68 | B.80%(1+40%)x-x=68 |
C.x-80%(1+40%)x=68 | D.80%(1-40%)x-x=68 |
A.40%(1+80%)x=48 | B.80%(1+40%)x-x=48 |
C.x-80%(1+40%)x=48 | D.80%(1-40%)x-x=48 |
A.=-9 | B.+2= |
C.-2= | D.=+9 |
A.80x+100= ×80x | B.80x+300= ×80x |
C.80x-100=×80x | D.80x-300=×80x |
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2024-12-30 17:50
初中数学 | 选择题
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