问题 填空题

计算:(3x3y-18x2y2+x2y)÷(-6x2y)=______.

答案

(3x3y-18x2y2+x2y)÷(-6x2y),

=(3x3y)÷(-6x2y)-18x2y2÷(-6x2y)+x2y÷(-6x2y),

=-

1
2
x+3y-
1
6

故应填:-

1
2
x+3y-
1
6

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