denissee9814
denissee9814 denissee9814
  • 13-07-2017
  • Mathematics
contestada

-2x+7=13x-5 looking for x

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choixongdong
choixongdong choixongdong
  • 13-07-2017
-2x+7=13x-5
13x + 2x = 7 + 5
15x = 12
    x = 12/15
    x = 4/5
Answer Link
Аноним Аноним
  • 13-07-2017
Hey!

Let's start writing this problem.
[tex]-2x+7=13x-5[/tex]
Subtract [tex]7[/tex] from both sides.
[tex]-2x+7-7=13x-5-7[/tex]
[tex]-2x=13x-12[/tex]
Subtract [tex]13x[/tex] from both sides.
[tex]-2x-13x=13x-12-13x[/tex]
[tex]-15x=-12[/tex]
Divide both sides by [tex]-15[/tex].
[tex]\frac{-15x}{-15}=\frac{-12}{-15}[/tex]
[tex]x=\frac{4}{5}[/tex]

Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish
Answer Link

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