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【从+,-,×,÷,【】中选去适当的符号添在等号左边,使等式成立55555=155555=399999=355555=255555=499999=20应该是99999=17】
题目内容:
从+,-,×,÷,【】中选去适当的符号添在等号左边,使等式成立
5 5 5 5 5 =1 5 5 5 5 5 =3 9 9 9 9 9 =3 5 5 5 5 5 =2 5 5 5 5 5 =4 9 9 9 9 9 =20
应该是9 9 9 9 9 =17优质解答
(5+5)÷5-5÷5=1
(5+5)÷5+5÷5=3
(9+9)÷9+9÷9=3
(5+5+5-5)÷5=2
(5+5+5+5)÷5=4
(9+9)+(9+9)÷9=20
(9×9-9)÷9+9=17
(9÷9+9÷9)×9=18
5 5 5 5 5 =1 5 5 5 5 5 =3 9 9 9 9 9 =3 5 5 5 5 5 =2 5 5 5 5 5 =4 9 9 9 9 9 =20
应该是9 9 9 9 9 =17
优质解答
(5+5)÷5+5÷5=3
(9+9)÷9+9÷9=3
(5+5+5-5)÷5=2
(5+5+5+5)÷5=4
(9+9)+(9+9)÷9=20
(9×9-9)÷9+9=17
(9÷9+9÷9)×9=18
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