INEQUALITIES-1

If │4x – 3 │= 17; Find  x

Solution

±(4x – 3 )= 17

4x -3= 17    OR   –(4x-3) = 17

4x – 3 = 17    OR   -4x+3=17

4x = 17 + 3    OR   -4x= 17-3

4x = 20     OR   -4x  =  14

4      4                4        4

x = 5  OR  x = ⁷/2

Hence x = 5 OR x = 7/2     

TRY THIS.....................................

If │4x – 7 │= 19; Find  x