来自舒志华的问题
简便运算:1/17x4/9+5/17x1/9=1/7
简便运算:1/17x4/9+5/17x1/9=1/7
1回答
2020-02-29 12:11
简便运算:1/17x4/9+5/17x1/9=1/7
简便运算:1/17x4/9+5/17x1/9=1/7
1/17x4/9+5/17x1/9
=1/17x4/9+1/17x5/9
=1/17x(4/9+5/9)
=1/17x1
=1/17