90-75÷15+5×9添加括号使答案是54
问题描述:
90-75÷15+5×9添加括号使答案是54
答
[(90-75)÷15+5]×9
=6×9
=54
90-75÷15+5×9添加括号使答案是54
[(90-75)÷15+5]×9
=6×9
=54