Question

Solve −2x ≥ 9 when x is a natural number

Answer 1

Given – 2x ≥ 9

⇒ `- x ≥ 9/2`

⇒ `x ≤ - 9/2`

x is a natural number

`x ≤  –  9/2`

x ≤ – 4.5

Since there exists no natural number less than `- 9/2`

∴ No solution