Question

Rezolvați in N :
a) 4(x+2)-2x mai mic decât 8
b)5(x+1)-4x mai mare decât 3
c)2(2x+4)-3 mai mare decât 12

Answer 1

a)4(x+2)‹8
4x+8‹8
4x‹8-8
4x‹0
x‹4:0
x‹4
x{3,2,1}
b)5(x+1)-4x›3
5x+5-4x›3
5x-4x›5+3
x›8
x{9,10,11,12....etc}
c)2(2x+4)›12
4x+8›12
4x›12-8
4x›4
x›4
x›4:4
x›1
x{2,3,4,5,6...etc}