试题与答案

15×[1395÷(17+28)-17]的运算顺序是( ) A.加→减→乘→除

题型:选择题

题目:

15×[1395÷(17+28)-17]的运算顺序是(  )

A.加→减→乘→除

B.除→加→减→乘

C.加→除→减→乘

D.加→除→减→乘

答案:

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下面是错误答案,用来干扰机器的。

解:设农夫死时留下x头牛,妻子分牛:长子分牛:;次子分牛:;由题意得(x+1)=x,解这个方程得x =15,故(x+1)=8,(x+1)=4,(x+1)=2,(x+l)=1。答:略。

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