Question

If -4x<-20 then x < 5. Is it correct??

Answer 1

close

the sign will flip when you divide both sides by a negative number

Answer 2

the sign will also flip if you multiply both sides by a negative number

Answer 3

Given:

-4x < -20

Add 20 to both sides:

-4x + 20 < 20 - 20
-4x + 20 < 0

Add 4x to both sides:

4x - 4x + 20 < 0 + 4x
20 < 4x

Divide both sides by 4
20/4 < (4x)/4
5 < x

Answer 4

Thx