Wednesday 2 December 2015

ABSOLUTE EQUATIONS - 1




If │4x + 11│= 47; Find  x

Solution

±(4x + 11 )= 47


4x +11= 47    OR   –(4x+11) = 47


4x+ 11 = 47    OR   -4x - 11=47


4x = 47- 11    OR   -4x= 47 + 11


4x = 36     OR     -4x  =  58
4       4                 -4       -4

x = 9  OR  x = -58/4 = -14.5

Hence,  x = 9 OR  x = -14.5  

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

If │2x + 15│= 77; Find  x

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