4/9*{3/4-{7/16-1/4}}

来源：学生作业帮助网编辑：作业帮时间：2024/04/29 00:08:37

4/9*{3/4-{7/16-1/4}}
4/9*{3/4-{7/16-1/4}}

4/9*{3/4-{7/16-1/4}}
4/9*{3/4-{7/16-1/4}}
括号中式子化解得：=4/9*{3/4-{7/16-4/16}}
=4/9*{3/4-3/16}
=4/9*{12/16-3/16}
=4/9*9/16
=1/4
亲,答案是1/4