51又2/3×3/5+71又3/4×4/7+91又4/5×5/9
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/12 05:28:35
![51又2/3×3/5+71又3/4×4/7+91又4/5×5/9](/uploads/image/z/132148-28-8.jpg?t=51%E5%8F%882%2F3%C3%973%2F5%EF%BC%8B71%E5%8F%883%2F4%C3%974%2F7%EF%BC%8B91%E5%8F%884%2F5%C3%975%2F9)
x)35|ao|x= &@%oozxMR>:lhoH)T9T%*TPPF 1 k
51又2/3×3/5+71又3/4×4/7+91又4/5×5/9
51又2/3×3/5+71又3/4×4/7+91又4/5×5/9
51又2/3×3/5+71又3/4×4/7+91又4/5×5/9
51又2/3×3/5+71又3/4×4/7+91又4/5×5/9
=155/3×3/5+287/4×4/7+459/5×5/9
=155/5+287/7+459/9
=31+41+51
=123