remember: for an equation, whatever you do to one side, you must do to the other to make it true
also, for inequalities, if you divide or multiply both sides by a negative number, you must flip the direction of the sign (ex < to >)
-10≤2x-4<8
add 4 to both sides
-6≤2x<12
divide both sides by 2
-3≤x<6
the solution is -3≤x<6 or in set notation, x=[-3,6)
