1：6x－4×1.6=4x
6x-2x=6.44x=6.4x=1.62：3（x-0.2）=4.8+1.2x3x-0.6=4.8+1.2x3x-1.2x=4.8+0.61.8x=4.2x=42/18x=21/9���һ�㣡�dz���л��6x-2x=6.44x=6.4x=1.62��3��x-0.2��=4.8+1.2x3x-0.6=4.8+1.2x3x-1.2x=4.8+0.61.8x=4.2x=42/18x=21/9��л�������а�������ɣ�ףѧϰ��