The easiest way to solve any absolute value problem is to determine all possible equations with respect to the signs of the expressions. This equation has 4 possibilities:
case 1)
2x+1-18=4
2x=21
x=21/2
case 2)
-2x-1-18=4
-2x=23
x=-23/2
case 3)
2x+1-18=-4
2x=13
x=13/2
case 4)
-2x-1 -18=-4
-2x=15
x=-15/2
case 1)
2x+1-18=4
2x=21
x=21/2
case 2)
-2x-1-18=4
-2x=23
x=-23/2
case 3)
2x+1-18=-4
2x=13
x=13/2
case 4)
-2x-1 -18=-4
-2x=15
x=-15/2
No comments:
Post a Comment