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精选优质文档-倾情为你奉上六年级解方程练习题X X= 2X + = 70%X + 20%X = 3.6X=20 25% + 10X = X - 15%X = 68XX121 5X3 X126X5 =13.4 3X=X= XX= 4X6=2 X= X = X = X = 4x3 9 = 29 x + x = 4X21=4 6X5 =13.4 X-X= 46385X= X= X=X=12 X= X=X= X-0.25= =30% 4+0.7X=102 X+X=42 X+X=105 X-X=400 X-0.125X=8 = X+X=18 X( + )= x+=4 XX12 5 X2.4580.365- x = (x- 4.5) = 7 x- 25%x = 10x-0.8x =32 20 x-8.5= 1.5 x- x -4= 21 X25%X=90 XX= 8X3X 15X260 4XX15专心-专注-专业