Question

rezolvati in multimea numerelor naturale ecuaţia 7 x plus 1 mai mic sau egal cu 22

Answer 1

7x+1 ≤ 22 | -1⇔ 7x ≤ 21⇔ x= 21:7 ⇔ x = 3

Answer 2

[tex]7x+1 \leq 22 \\ 7x \leq 21 \\ x \leq 3 \\ x natural[/tex]⇒x∈{0,1,2,3}