Tuesday, 27 December 2016

INEQUALITIES 2


If 10x + 21 7 + 3x 9x – 10; find x. 

Solution

10x + 42 7 + 3x and  7 + 3x 9x - 29

10x – 3x 7 - 42 and  7 +29 9x - 3x

7x -35 and  36 6x 

7x -35  and  36 6x
7        7            6      6

x -5 and  6 x

x -5 and  x  ≥ 6


TRY THIS…………….


If 10x - 63 7 + 3x 9x – 65; find x

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