Question

Solutiile naturale ale inecuatiei 2(x+4) < 16 sunt :
Dau coroana!multumesc <3

Answer 1

2(x+4) < 16

x+4<16/2

x+4<8

x<8-4

x<4

0≤x<4⇒x={0,1,2,3}

Bafta!

Answer 2

2 ( x + 4 ) < 16

2 x + 8 < 16

2 x < 16 - 8

2 x < 8

x < 8 : 2

x < 4

0 ≤ x < 4 ⇒  x = { 0; 1; 2; 3 }  ∈ N

Verific:

x = 0⇒ 2 x 4 = 8 < 16

x = 1 ⇒ 2 x 5 = 10 < 16

x = 2 ⇒ 2 x 6 = 12 < 16

x = 3 ⇒2 x 7 = 14 < 16