Respuesta :

Hi, there.

  _____

Let us solve this in terms of n.

First off, subtract 1 from both sides:

[tex]\boldsymbol{a-1=3n}[/tex]

Next, divide both sides by 3:

[tex]\boldsymbol{\dfrac{a-1}{3}=n}[/tex]

Answer --

[tex]\boldsymbol{\dfrac{a-1}{3}=n}[/tex]

Hope the answer - and explanation - made sense,

happy studying!!

Hi1315

Answer:

[tex]\sf \: \frac{(a - 1)}{3} = n \\ [/tex]

Step-by-step explanation:

[tex] \sf \: a = 3n + 1 \\ [/tex]

To remove 1, subtract 1 from both sides.

[tex] \sf \: a - 1 = 3n + 1 - 1 \\ \sf \: a - 1 = 3n[/tex]

Divide both sides by 3.

[tex] \sf \: \frac{(a - 1)}{3} = \frac{3n}{3} \\ \\ \sf \: \frac{(a - 1)}{3} = n[/tex]

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