(3/4+2/5)*(2/3-2/9) (1/3+1/5)/(2/3+2/5) 用合适的方法计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/12 01:31:05
(3/4+2/5)*(2/3-2/9) (1/3+1/5)/(2/3+2/5) 用合适的方法计算
(3/4+2/5)*(2/3-2/9) (1/3+1/5)/(2/3+2/5) 用合适的方法计算
(3/4+2/5)*(2/3-2/9) (1/3+1/5)/(2/3+2/5) 用合适的方法计算
(3/4+2/5)*(2/3-2/9)
=(3/4+2/5)*(6/9-2/9)
= (3/4+2/5)*(4/9)
=(3/4)(4/9)+(2/5)(4/9)
=1/3+8/45
=15/45+8/45
=23/45
(1/3+1/5)/(2/3+2/5)
=(1/3+1/5)/[2(1/3+1/5)]
=1/2
-|-2/3-(+2/3)|-|(-1/5)+(-2/5)| |4/7-2/5|-|3/5-7/9|+|2/9-3/7|
9×3×5×2
2 3 4 5 6 8 9
2/9×8/5×3/4要竖式
5/9+(3/4-1/2)
1+2+3+5+4+6+9
3 5/9+4 7/9-1.625-2 3/8
脱式计算 2/3+5/9-2/3+5/9 3/9-(1/4-1/9)-3/4
1+2+3-4+9-3+51+2-3+9-5+2
36×(4/3-9/4) ,(4/3+5/2-3/2)×60 ,36×(4/3-9/4) ,(4/3+5/2-3/2)×60 ,
2/5+3/5×4/9÷4/5=?
(-3a^3b^2)^2*(-2ab^2)^3/(9a^5b^4)
2-2^2-2^3-2^4-2^5-2^6-2^7-2^8-2^9+2^10
2/9×3/4+5/27×3/4过程
1/2x+3,2/3-2x.2x+5/4x^2-9通分
1/2X+3,2/3-2X,2X+5/4X^2-9 通分
1/2X+3,2/3-2X,2X+5/4X^2-9 通分
计算:[(5-7/2)*9/4]/[4/(4+4/3)]