solve 6-3x is greater than 18

Question



Answer 1

"6-3x is greater than 18"

6 - 3x > 18

-3x > 12 [subtract 6 from each si de]

x < -4 [divide by (-3) reverses the sense of the inequality]

Check #1`:

Let x=0

Is 6 - 3(0) > 18 ?

6 > 18 ? NO ! (as we expected)

Check #2:

Let x = 6

Is 6 - 3(-6) > 18 ?

6 + 18 > 18 ?

24 > 18 ? YES {as we expected}