Question

ajutor toate 5 va rog!!​

Answer 1

$ex \: \: 1 \\ 3 - 2x = x + 6 \\ - 2x - x = 6 - 3 \\ - 3x = 3 \\ x = - 1$

$ex \: \: 4 \\ 2(x + 1) < 4 - 3(x - 2) \\ 2x + 2 < 4 - 3x + 6 \\ 2x + 2 < 10 - 3x \\ 2x + 3x < 10 - 2 \\ 5x <8 \\ x < \frac{8}{5}$

$ex \: \: \: 5 \\ p - nr \: \: paginilor \\ x - nr \: de \: \: vacanta \\ p = 50 \:x \\p = 70( x - 4) \\ 50x = 70(x - 4) \\ 50x = 70 - 280 \\ 280 = 70x - 50x \\ 280 = 20x = > \\ x = \frac{28}{20} = 14 \: \: zile \: \: vacnta$