Monday 11 April 2016

INEQUALITIES-1


If 3x – 47  x + 5  21x; find x

solution

3x – 47  x + 5 and  x + 5  21x

3x – x  47+ 5 and  5  21x - x

2x  52(divide by 2 both sides) and  5  20x (divide by 20 both sides)

x  26 and  5/20  x

x  26 and  1/4  x   [since  5/20 simpifies to 1/4 ]


x  26 and  x  1/4 

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


If 13x – 23  x + 25  6x; find x.

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