(x-3)/2-(6x-1)/6＞-3；(3x-9)/6-(6x-1)/6＞-3；9x-8＞-18；9x＞-10；x＞-10/9；x非负整数解为所有非负整数.
x-3/2-6x-1/6＞-3；-5x-5/3＞-3；-5x＞-4/3；x＜4/15；x的非负数整数解为0.