# Math

posted by Kathrin

-8x > -64

A little confused on how this is done.

1. Ms. Sue

-8x > -64

Divide both sides by -8. Turn the sign around because you're dividing by a negative number.

x < 8

2. Steve

one way is to remember to change direction when multiplying/dividing by negative values. So,

-8x > -64
x < 8

This is just a shortcut to doing the addition/subtraction to swap sides:

-8x > -64
0 > 8x-64
64 > 8x
8 > x

no change of direction needed here, but the 8x still winds up on the proper side of the arrow

3. Kathrin

Thank you so much!

4. Ms. Sue

You're very welcome.

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