Question

If x < 5, then which of the following must be true?

Answer 1

Answer:

B

Step-by-step explanation:

x<5

When we multiply by negative number sign of inequality should be  changed also.

x*(-1) > 5*(-1)

-x>-5

Answer 2

For this case we have the following expression:

$x$

By definition we have to:

Let $c$. If $a$ then $ac> bc$

That is to say:

If we multilate on both sides of the inequality by -1, the sign automatically changes direction.

$(-1) (x) -5$

ANswer:

Option B