1.当X=12时,X+19()30,60-X()32 2.X=0.2时,0.6X()0.12,X÷2()0.2

问题描述:

1.当X=12时,X+19()30,60-X()32 2.X=0.2时,0.6X()0.12,X÷2()0.2

X+19(>)30,60-X(>)32
0.6X(=)0.12,X÷2(