答案是:
4x+(3x/5)4=256
(5)(4x)+(3x/5)(4)(5) = 256(5)
20x +12x =1280
32x =1280
x =40?没看懂请问你的问题是哪个?
4x+(3x/5)/4=256

or

(4X+3X/5)÷4=256

...我上面好像算错了4x+5分之3x除以4=256(3x÷(4x+5))÷4 =256<------(3x/4x+5)/4 = 256 算式正确吗????


(3x÷(4x+5)) =256*4
3x = 1024*(4x+5)
3x = 4096x + 5120
3x - 4096x = 5120
-4093x= 5120
x =(5120/-4093)