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
    add 8x:
    0 > 8x-64
    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

  3. Kathrin

    Thank you so much!

  4. Ms. Sue

    You're very welcome.

Respond to this Question

First Name

Your Answer

Similar Questions

  1. math-algebra

    Find three different ordered pairs that are solutions of the question x=2 and you have to use -1,0,1 for thje subsitut of y or x i don't so confused please help i don't know the ansrer math is hard I can see why you are confused-- …
  2. Confused

    We are doing distributive properties. Ex: 0.5(4m+3)-0.2(6m+1) OKay so is that minus 0.2 or negative 0.2. I'm so confused. Is this how you would simplify it?
  3. Math

    ok so i'm kinda sort of confused... I had this for a equation X^2 + 4X - 1 = 0 and then I was like zero?
  4. algebra

    I'm really confused on substitution. My teacher has a terrible accent and cannot understand what she says. i get the basics myself but i'm pretty confused on the following problems: 1) y= 3x - 8 y= 4-x 2) 2x + 7y = 3 x=1- 4y 3) x = …
  5. Chemistry CONFUSED

    Ok I'm really confused on the question I asked how many CO2 molecules can be made with 0.500 mol of oxygen atoms. Please help with setting this up
  6. confused in math

    1.20 with a line over 20 convert decimal to fraction, step by step detail because I am lost and confused
  7. Math

    Hi there! I am so confused about these questions if anyone could help that would be great. 1. Simplify. x+5/x^2+6x+5 A) 1/x+1; where x= -1*** B) 1/x+1; where x=-1,-5 C) 1/x-5; where x=5 D) x-5 2. Simplify. x^2+3x-4/x+4 A) 1/x-4; where …
  8. English

    1. She was confused at his error. 1-2. She was confused by his error. 2. He was confused about something. 3. He is confused in mind. (Are they all grammatical?
  9. Algebra

    Simplify 1) 4r+3-9r^2+7r 2) (4h^3+3h+1)-(-5h^3+6h-2) 3) 5k (3-4k) 4) (2x-3)(4x+3) 5) (4x-3)(4x+3) My answers: 1) 11r+3-9r^2 2) this one I am confused about 3) confused 4) 7x×7 5) 8x-6 Please help me
  10. English

    1. I was confused by what to do. 2. I was confused at what to do. 3. I was confused over what to do. 4. I was confused about what to do. 5. I was confused what to do. 6. I was puzzled by what to do. 7. I was puzzled at what to do. …

More Similar Questions