{4-【12+4x(3-10)}除以5急,帮帮我.`(*∩_∩*)′

问题描述:

{4-【12+4x(3-10)}除以5
急,帮帮我.`(*∩_∩*)′

4,直接按小括号-方括号-大括号算
{4-[12+4x(3-10)]}/5
={4-[12+4*(-7)]}/5
=[4-(12-28)]/5
=[4+(28-12)]/5
=(4+16)/5
=20/5
=4