2×[(3X+45)/10] + 17 = X

问题描述:

2×[(3X+45)/10] + 17 = X

2×[(3X+45)/10] + 17 = X
(3x+45)/5 +17=x
3x+45+85=5x
3x-5x=-85-45
-2x=-130
x=65