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15.6/9分之4+5分之22*2.25
人气:110 ℃ 时间:2020-06-28 10:01:31
解答
15.6/9分之4+5分之22*2.25
=15.6×(4分之9) +5分之11×4.5
=3.9×9+11×0.9
=3.9×9+1.1×9
=(3.9+1.1)×9
=5×9
=45
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