用""号填空 x+5__x+2 a+5__b+5(a0) 3a__3b(a

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用""号填空x+5__x+2a+5__b+5(a0)3a__3b(a用""号填空x+5__x+2a+5__b+5(a0)3a__3b(a用""号填空x+5__x+2a+5__b+5(a0)3a__3b

用""号填空 x+5__x+2 a+5__b+5(a0) 3a__3b(a
用""号填空 x+5__x+2 a+5__b+5(a0) 3a__3b(a

用""号填空 x+5__x+2 a+5__b+5(a0) 3a__3b(a
(1) x+5>x+2
(2)a+50)
(4) 3a