问题 解答题
递等式计算下面各题.
72-44+85
234-135÷9144+(57-12)×2
95-15×6+41(15+20)×3(75+30)÷(20-5)
答案

(1)72-44+85,

=28+85,

=113;

(2)234-135÷9,

=234-15,

=219;

(3)144+(57-12)×2,

=144+45×2,

=144+90,

=234;

(4)95-15×6+41,

=95-90+41,

=5+41,

=46;

(5)(15+20)×3,

=35×3,

=105;

(6)(75+30)÷(20-5),

=105÷15,

=7.

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