math, beginning algebra

posted by .

how do you solve this i've tried many ways and i always get stuck.

-4(2x - 3 ) = -8x + 5

you use -4x times 2x first, then you times -3. so you have (-8+12)=8x+5. you know -8+12 is 4, so the equation becomes 4=8x+5. so x is probably a negative number. so 4=5+8x and then you know 4-5=8x. -1=8x, so x is -1/8. i think that's the answer.

opps. i think i missed the x. is there even an answer?

-4*-3=-12 so
Adding 8x to each side gives
So the x term cancels and this equation has no solution.Obviously -12 does not equal +5.

I hope this helps.

Oy! 2 mistakes in the responses(It's ok...we all make mistakes) Ultimately, there is no answer. BUT...

-4 (2x-3) = -8x +5

-8x + 12 = -8x +5

The 8x's cancel each other out. So Dr. Bob's response should say

"Obviously +12 does not equal +5"

Bob's right: There's no solution.

  • math, beginning algebra -


Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra

    I have been working this one for awhile and have become more confused. Please assist. Problem: Find two consecutive odd integers such that 5 times the first interger is 12 more than 3 times the second. The key thing is to realize that …
  2. calculus

    I am studying for a final exam and in our review packet we have this question, which I am having trouble with: lim (x-->0) ((e^x)+x)^(1/x) I tried this problem two ways. The first was with L'Hopitals rule... lim(x-->0) (1/x)((e^x)+x)^(1/x-1) …
  3. math

    you just got home from school and pick up your always use 5 7 and 9 for speedial.the records of those numbers are:5 dialed 6 times.7 dialed 9 times.9 dialed 3 times. which speedial number is the mode.
  4. Algebra

    I have this math probelm z-(3z)/(2-z)=(6)/(z-2) in my book it says to solve the equation. I have worked this problem many times and I keep comming up with different answers. When I use an online calculator to check my work it is giving …
  5. Algebra

    -55=6x-x-5? I have tried this equation so many times and I cant solve it.
  6. math question

    /how do i solve this? The probability of winning a game is 15%. If you play 20 times,how many times should you expect to win?
  7. Math

    a standard number cube is rolled 180 times. Predict how many times a 3 or 5 will be the result. 31 times 60 times 57 times 30 times I chose 31 times Is that correct i would appreciate your help
  8. algebra

    Please help I have tried this question so many times: I cannot type out the exponents because my keyboard does not allow so I'll have to write it in verbal form I'm sorry. What is the simplified form of -9 m to the power of negative …
  9. Data Management

    Q: A coin is tossed 9 times. How many ways could the result be 6 heads and 3 tails?
  10. Pre-Algebra

    A fair number cube, numbered 1 though 6 is rolled 200 times. About how many times can it be expected to on the number 4?

More Similar Questions