Question

ПОМОГИТЕ С АЛГЕБРОЙ ПЛИЗ

Answer 1

а)

$\left \{ {{5x-2\geq 6x-1} \atop {4-3x > 2x-6}} \right.$

$\left \{ {{6x-5x\leq -2-1} \atop {2x+3x < 4+6}} \right.$

$\left \{ {{x\leq -3} \atop {5x < 10}} \right.$

$\left \{ {{x\leq -3} \atop {x < 2}} \right.$

x ≤ -3

Ответ: х ∈ (-∞; -3]

б）

$\left \{ {{7(x-1)-2x > 9-4x} \atop {3(5-2x)-1\geq 4-5x}} \right.$

$\left \{ {{7x-7 -2x > 9-4x} \atop {15-6x -1\geq 4-5x}} \right.$

$\left \{ {{7x-2x+4x > 9+7} \atop {6x-5x\leq 15-1-4}} \right.$

$\left \{ {{9x > 16} \atop {x\leq 10}} \right.$

$\left \{ {{x > 1\frac{7}{9} } \atop {x\leq 10}} \right.$

$1\frac{7}{9} < x\leq 10$

Ответ: x ∈ (1 ⁷/₉; 10]