Question

|x-2|=5
și
|2x-3|=9
va roog.

Answer 1

a)|x-2|=5

x-2=5

-(x-2)=5

x=5+2=7

-x+2=5

2-x=5

-x=5-2=3

x=-3

S={-3,7}

b)|2x-3|=9

2x-3=9

-(2x-3)=9

2x=9+3=12

$x = \frac{12}{2} = 6$

-2x+3=9

-2x=9-3=6

$x = - \frac{6}{2} = - 3$

S={-3,6}