s=1/2n(a+K)

could someone show me how to do this? im confused because i thought you had to multiply the entire equation by 2 but thats giving me wrong answer

Question

s=1/2n(a+K)

could someone show me how to do this? im confused because i thought you had to multiply the entire equation by 2 but thats giving me wrong answer

freckles · Answer

There isn't enough information in this question.

anonymous · Answer

solving for K

freckles · Answer

$$s=\frac{1}{2}n(a+K) ?$$
If this is right, yes multiplying 2 as a first step is good.
But that still will not isolate K yet.
You will still have to perform more steps.
Is this what you get when you multiply 2 on both sides?
2s=n(a+K)
try isolating (a+k) next by undoing the multiplication by n to it.

anonymous · Answer

Yeah I get that part I'm just wondering why I dont multiply a and K by 2 and it ends up being 2s=n(a+K) instead

freckles · Answer

are you asking why 2/2=1?

anonymous · Answer

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