解: 32x-7x=6.56+8.6x 32x-7x-8.6x=6.56 16.4x=6.56 x=0.4
32x-7x-8.6x=16.4x=6.56x=0.4
25x-8.6x=6.5616.4x=6.56x=0.4望采纳