Christian K. answered • 05/13/13

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Happy Easter!

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Ari S.

asked • 05/01/13i missed school because i was sick and missed how to do inequalities. I looked it up and it looks really confusing!!! Can you help!?!?!?!?

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Christian K. answered • 05/13/13

Tutor

New to Wyzant
Christian tutor is ready to help you!

Hi!

Happy Easter!

I am Christian and I can help you.

+++ IHM

Roman C. answered • 05/01/13

Tutor

4.9
(639)
Masters of Education Graduate with Mathematics Expertise

You solve inequalities in much the same way as you solve equations. The major difference is that when you multiply or divide both sides by a negative number, you must flip the inequality.

Here is an example.

Strict inequality (< or >):

5 - 2x < x - 1

-2x < x - 6 ← Subtraction of 5 from both sides.

-3x < -6 ← Subtraction of x from both sides.

x > 2 ← Division of both sides by -3. Inequality is flipped because -3 is negative.

-------------------------------------------------------------

Weak inequality (≤ or ≥):

5 - 2x ≤ x - 1

-2x ≤ x - 6 ← Subtraction of 5 from both sides.

-3x ≤ -6 ← Subtraction of x from both sides.

x ≥ 2 ← Division of both sides by -3. Inequality is flipped because -3 is negative.

I hope this helps.

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