Question

Aflați numărul natural prim x astfel încât 7(x-1)<42

Answer 1

Răspuns:

• x = {1, 2, 3, 5}

Explicație pas cu pas:

7(x - 1) < 42

x - 1 < 42/7

x - 1 < 6

x < 6 + 1

x < 7

x = {1, 2, 3, 5}

Answer 2

Răspuns:

$7(x - 1) < 42\\\\x - 1 < 42:7\\\\x - 1 < 6\\\\x < 6 + 1\\\\x < 7\\\\x=0,1,2,3,4,5,6\\\\ x= {1, 2, 3, 5}.nr.prime$