Question

ma poate ajuta cineva?
va rog!​

Answer 1

a)2/3*x-1/5>7/15

2x/3-1/5>7/15

amplificam corespunzator si =>(10x-3)/15>7/15

<=>10x-3>7

10x>10

b)1,3*x-13<2x+8

13x/10-130/10<(20x+80)/10

13x-130<20x+80

13x<20x+110

c)(-2x+1)/5>=(-5*x+1)/2

-4x+2>=-25x+5

-3>=21x

-7x<=-1

7x>=1

d)(4*(x+3))/-3<=(2x-2)/9

-12x-36<=2x+2

-14x-36<=2

14x>=-34