Math
posted by Kathrin .
8x > 64
A little confused on how this is done.

8x > 64
Divide both sides by 8. Turn the sign around because you're dividing by a negative number.
x < 8 
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
add 8x:
0 > 8x64
add 64:
64 > 8x
8 > x
no change of direction needed here, but the 8x still winds up on the proper side of the arrow 
Thank you so much!

You're very welcome.
Respond to this Question
Similar Questions

Math
Please help I am a little confused!!!! Graph using the slope and yintercept.. x + 3y = 9. 
Math/117
Please help I am a little confused!!!! Graph using the slope and yintercept.. x + 3y = 9. 
Algebra
I am very confused about functions. I think if I could see this example, then I'll be good. f(x)=x^2 and g(x)=5x. I am supposed to find f (little circle that's used in Danish...what's it called in math terms? 
math
I'm a little confused on how to solve this system of equations. 5a=5 6b3c=15 2a+7c=5 Thanks 
Grammar
I'm a little confused with this question about infinitives and infinitive phrases: Choose the sentence that contains an infi. or an infi. phrase a.will you take the playbook back to coach? 
math
how do you write .0125 as a fraction and mixed number in simplest form? 
English
To Build a Fire by Jack London Where is the man originally from? 
math
uSING a=LW FIND THE AREA OF A RECTANGLE LIS 9X^2 W IS 4X^3 i AM A LITTLE CONFUSED WITH THIS CAN YOU HELP ME PLEASE 
math
what is a variable? is it a number or a letter? 
Math
I am a little confused with this: How do I change 8 1/3% into a fraction?