aalyahbembry5834
aalyahbembry5834 aalyahbembry5834
  • 23-10-2020
  • Mathematics
contestada

3x – 7 –2/3 (9x – 6) = 15

with explanation.

Respuesta :

PhantomWisdom PhantomWisdom
  • 30-10-2020

Solution.

We need to find the value of x for the given expression.

[tex]\dfrac{3x-7-2}{3(9x-6)}=15[/tex]

or

[tex]\dfrac{3x-9}{3(9x-6)}=15[/tex]

Firstly, cross multiplying both sides,

[tex]3x-9=45(9x-6)[/tex]

or

[tex]3x-9=405x-270[/tex]

Taking like terms together,

[tex]3x-405x=-270+9\\\\-402x=-261\\\\x=\dfrac{261}{402}\\\\x=\dfrac{87}{134}[/tex]

So, the value of x is [tex]\dfrac{87}{134}[/tex]

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