Question

Помогите с математикой пожалуйста номер 970
Зарание спасибо!)

Answer 1

1)

$left { {{3(x-1)<x-3} atop {5(x+3)>2x+3}} right. \ left { {{3x-3<x-3} atop {5x+15>2x+3}} right.  \ left { {{2x<0} atop {3x>-12}} right. \ left { {{x<0} atop {x>-4}} right.  \ x in (-4;0)$

2)

$left { {{2(y-2) geq 3y+1} atop {5(y+1) leq 4y+3}} right.  \ left { {{2y-4 geq 3y+1} atop {5y+5 leq 4y+3}} right. \ left { {{-y geq 5} atop {y leq-2}} right. \ left { {{y leq -5} atop {y leq-2}} right.  \ y in (-infty;-5]$

3)

$left { {{3(2y-3)leq y+6} atop {4(3y+1)geq5y-10}} right. \ left { {{6y-9leq y+6} atop {12y+4 geq 5y-10}} right.  \ left { {{5yleq 15} atop {7y geq -14}} right. \ left { {{yleq 3} atop {y geq -2}} right. \ yin [-2;3]$

4)

$left { {{2(3x+2)>5(x-1)} atop {7(x+2)>3(2x+3)}} right. \ left { {{6x+4>5x-5} atop {7x+14>6x+9}} right. \ left { {{x>-9} atop {x>-5}} right. \ xin (-5;+infty)$

Answer 2

Спасибо большое!