Question

solve 30 - 4 (2x - 1) < 30 where x e z​

Answer 1

Answer:

30−4(2x−1)<30

⇒30−8x+4<30

⇒34−8x<30

⇒−8x<30−34

⇒−8x<−4

⇒8x>4[On multiplying both sides by -1, the inequality reverses]

⇒x>4/8

⇒x>1/2

As x is a positive integer

The solution set is {1,2,3,…}

Answer 2

Step-by-step explanation:

30 - 4 (2x - 1) < 30 where x e z

Given inequation, 

30−4(2x−1)<30

⇒30−8x+4<30

⇒34−8x<30

⇒−8x<30−34

⇒−8x<−4 

⇒8x>4[On multiplying both sides by -1, the inequality reverses]

⇒x>4/8

⇒x>1/2

As x is a positive integer

The solution set is {1,2,3,…}