试题 试卷
题型:填空题 题类:常考题 难易度:普通
数与代数8403 10
X=
4+7x=102; x+ x=42; : = :x; x﹣0.25= .
①x: =36:
②70%x﹣18× =9
-2.4x= 2.5:(5+2x)=:(x-1.2) =
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