Question

Помогите пожалуйста прошу!!!
Номер 139.1-2

Answer 1

{5(x+2)-9(x+1)-3<1-4(x+3)
{7(3+5x)<3x-5(x-2)

{(5x+10)-(9x+9)-3<1-(4x+12)
{(21+35x)<3x-(5x-10)

{5x+10-9x-9-3<1-4x-12
{21+35x<3x-5x+10

{-4x-2<-4x-11
{21+35x<-2x+10

{false
{35x+2x<10-21

{false
{37x<-11

{false
{x<-11/37

x∈(-∞;-11/37)

-------------------------------------------------------

{x/2 - 7/4 > (5x)/2 - 7/8 |*8
{(2x+1)/4 < 5 - (1-2x)/3 |*12

{4x-14>20x-7
{3(2x+1)<60-4(1-2x)

{4x-14>20x-7
{6x+3<60-4+8x

{4x-14>20x-7
{6x+3<56+8x

{4x-20x>-7+14
{6x-8x<56-3

{-16x>7
{-2x<53

{16x<-7
{2x>-53

{x<-7/16
{x>-53/2

x∈(-53/2;-7/16)