Thread: stuck on an inequality problem

I am able to solve regular inequalities but not this type

2x+1 < 5x-8

What have you tried?
Put all the constant numbers to one side and also all the variables to one side. Can you do that?

so 7x+7=0?

or

2x+1-5×-8=0

I tried both and still get stuck

Originally Posted by GaDoomZ

I am able to solve regular inequalities but not this type

2x+1 < 5x-8

Step #1

.

Carry on!

Approach inequalities like a regular equation. The only thing you Must keep in mind is to flip the sign whenever you divide by a negative number.

Here's an example:



divide both sides by -2, therefore sign flips.


Hope it helped.

Originally Posted by GaDoomZ

so 7x+7=0?

or

2x+1-5×-8=0

I tried both and still get stuck

Because you have not taken the correct steps.



Add 8 to both sides, the left is still less than the right
since 3<7, therefore 3+8<7+8 for example.







Now subtract 2x from both sides.
This gets you to what is probably quite familiar to you.