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用递等式计算. 576÷3÷4 17×34-278 (601-246)÷5
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(1)576÷3÷4,
=192÷4,
=48;
(2)17×34-278,
=578-278,
=300;
(3)(601-246)÷5,
=355÷5,
=71.
=192÷4,
=48;
(2)17×34-278,
=578-278,
=300;
(3)(601-246)÷5,
=355÷5,
=71.
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