Respuesta :

Answer:

x=3.75

Step-by-step explanation:

15x - 45= 3x

Subtract 15x from both sides:

-45 = -12x

Divide both sides by -12, the -12's cancel and you get:

-45/-12 = 3.75

x= 3.75

I hope this helps!! blessings, xx,nm! :)

Given :-

[tex]15x-45=3x[/tex]

Answer :-

[tex]15x-3x =45[/tex]

[tex]12x=45[/tex]

[tex]x = \frac{15}{4} [/tex]

or

[tex]x = 3.75[/tex]

Extra Information :-

  • Sign change is mandatory if we change the place ,Example - if it was (+) if we change the place it will become (-) and if it was (-) and we change the place then it will become (+) ,but if we don't change the place then we don't need to change the sign ( +,-) .

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