Question

4.Rezolvaţi sistemul de inecuatii{3x - 1 > -5x +3 {2x + 7 < 7x - 18
​

Answer 1

Răspuns:

Explicație pas cu pas:

sistemul:

$\left \{ {{3x-1 > -5x+3} \atop {2x+7 < 7x-18}} \right\\\left \{ {{3x+5x > 3+1} \atop {2x-7x < -18-7}} \right\\\left \{ {{8x > 4} \atop {-5x < -25}} \right\\\left \{ {{x > \frac{1}{2} } \atop {x > 5}} \right$

x∈(5;+∞)