no su binary and superusert camnt be installed

[asyraf]

Guys.. Pls help me! Im begging. I had rooted my devoce which os asus tablet. When i open supersu, it says no su binary and supersu cant be installed.. Everything needed root permission from supersu but i cant get the permission and i cant get the access to supersu.. I had read a lot of forum relating this problem but nothing explain me well and solve my problem because my device is a tablet.. Pls help me guys pls... im so new to this rooting stuff