Question

ajutatima va rig la ambele ex​

Answer 1

25. 7/(x-3)∈N⇒ x-3∈D₇⇒ x-3∈{1,7} /+3⇒ x∈{4,10}

26. x/6=3/5

5x=6×3

5x=18

x=18/5

x=3,6

Answer 2

25)

7/(x-3) ∈ |N ⇒

x-3 ∈ D₇ ⇒

x-3 ∈ {1, 7} |+3 (adunam cu 3)

x ∈ {4, 10}

26)

x/6 = 3/5

5x = 6×3

5x = 18

x = 18/5