261=1+4(1-8k)

Solution for 261=1+4(1-8k) equation:

261=1+4(1-8k)

We move all terms to the left:

261-(1+4(1-8k))=0

We add all the numbers together, and all the variables

-(1+4(-8k+1))+261=0


We calculate terms in parentheses: -(1+4(-8k+1)), so:

1+4(-8k+1)

determiningTheFunctionDomain
4(-8k+1)+1

We multiply parentheses

-32k+4+1

We add all the numbers together, and all the variables

-32k+5

Back to the equation:

-(-32k+5)


We get rid of parentheses

32k-5+261=0

We add all the numbers together, and all the variables

32k+256=0

We move all terms containing k to the left, all other terms to the right

32k=-256

k=-256/32

k=-8