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18x35+29x35的简便运算

0.35×18×0.2 =(0.35×0.2)×18 =0.07×18 =1.26 你好,本题已解答

25x35%十18x42% =25×0.35+18×0.42 =8.75+7.56 =16.3

=33x(18+17)+67x35 =33x35+67x35 =35x(33+67) =350

原式 =(18×12)/(35×109) =216/3815 18和12只有2和3约数,而35

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