Math

Since the absolute value of x-4/2 is given and already subtracted from 1, we can write the equation as x-4/2 ≥ 8. Adding 4/2 to both sides, we get x ≥ 8+4/2, which simplifies to x ≥ 6. Therefore, x must be greater than or equal to 6 for x-4/2-1 ≥7 to be true.