(5/12-5/16)*4/5+2/3 8/9÷【4/5÷(3/5-1/4)】 【1】(5/12-5/16)*4/5+2/3 【2】8/9÷【4/5÷(3/5-1/4)】
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 04:38:54
![(5/12-5/16)*4/5+2/3 8/9÷【4/5÷(3/5-1/4)】 【1】(5/12-5/16)*4/5+2/3 【2】8/9÷【4/5÷(3/5-1/4)】](/uploads/image/z/8785891-19-1.jpg?t=%EF%BC%885%2F12-5%2F16%EF%BC%89%2A4%2F5%2B2%2F3+8%2F9%C3%B7%E3%80%904%2F5%C3%B7%EF%BC%883%2F5-1%2F4%EF%BC%89%E3%80%91+%E3%80%901%E3%80%91%EF%BC%885%2F12-5%2F16%EF%BC%89%2A4%2F5%2B2%2F3+%E3%80%902%E3%80%918%2F9%C3%B7%E3%80%904%2F5%C3%B7%EF%BC%883%2F5-1%2F4%EF%BC%89%E3%80%91)
(5/12-5/16)*4/5+2/3 8/9÷【4/5÷(3/5-1/4)】 【1】(5/12-5/16)*4/5+2/3 【2】8/9÷【4/5÷(3/5-1/4)】
(5/12-5/16)*4/5+2/3 8/9÷【4/5÷(3/5-1/4)】
【1】(5/12-5/16)*4/5+2/3 【2】8/9÷【4/5÷(3/5-1/4)】
(5/12-5/16)*4/5+2/3 8/9÷【4/5÷(3/5-1/4)】 【1】(5/12-5/16)*4/5+2/3 【2】8/9÷【4/5÷(3/5-1/4)】
【1】(5/12-5/16)*4/5+2/3
=5/12×4/5-5/16×4/5+2/3
=1/3-1/4+2/3
=1-1/4
=3/4
【2】8/9÷【4/5÷(3/5-1/4)】
=8/9÷4/5×(3/5-1/4)
=10/9×(3/5-1/4)
=2/3-5/18
=7/18
【1】(5/12-5/16)*4/5+2/3 = (20-15)/48*4/5+2/3
=1/12+8/12
=9/12
...
全部展开
【1】(5/12-5/16)*4/5+2/3 = (20-15)/48*4/5+2/3
=1/12+8/12
=9/12
=3/4
【2】 8/9÷[4/5÷(3/5-1/4)]=8/9x5/4x(12-5)/20
=10/9x7/20
=7/18
收起