Номер1054плиз!!!!!!!!!!!!!!

Question

Номер1054плиз!!!!!!!!!!!!!!

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Answer 1

1)
{2x+7>=1
{x-3<1<br>
{2x>=-6
{x<4<br>
{x>=-3
{x<4<br>
x∈[-3;4)

2)
{4x+9>-15
{2-x<=5<br>
{4x>-24
{x>=-3

{x>-6
{x>=-3

x∈[-3;+∞)

3)

{7x+9<2x-1<br>{4+11x>9x-14

{5x<-10<br>{2x>-18

{x<-2<br>{x>-9

x∈(-9;-2)