Question

Modul din 2x-3 supra 3 =5
|2x-3/3|=5 repede va rog
Si daca mai aveti timp:
|2x+1|=x-2

Answer 1

$a) | \frac{2x - 3}{3} | = 5 \\ \\ | \frac{2x - 3}{ |3| } | = 5 \\ \\ \frac{ |2x - 3| }{3} = 5 \\ \\ 3 \times \frac{ |2x - 3| }{3} = 5 \\ \\ |2x - 3| = 3 \times 5 \\ \\ |2x - 3| = 15 \\ \\ 2x - 3 = 15 = > x = 9 \\ \\ 2x - 3 = - 15 = > - 6 \\ \\ = > x_{1} = - 6 \\ \\ \: \: \: \: \: \: \: \: x_{2} = 9$