Question

solve: -2x+3(x-4)>4x-21

Answer 1

Distribute everything so that you can collect like terms and then subtract and divide as necessary. I'll help you along, show me where you get stuck.

Answer 2

1x-12>4x-21
can i cross the > sign ?

Answer 3

The only time you switch the > to a < is if you multiply or divide both sides by a negative number.

You don't have to memorize it if you can check it yourself, try this:

2<3

multiply both sides by -1

-2>-3

-2 minus 1 is -3, so you know that you have to flip the sign like this.

Answer 4

would the answer for the problem i gave be x<3?

Answer 5

Yep exactly!

Answer 6

-2x+3x-12>4x-21
x-12>4x-21
-3x>-9
x<3