Suppose, we are given
two points as
F as (x1, y1)
H as (x2, y2)
assume it divides in m/n
we can use formula

now, we are given points as
F=(x1, y1)=(4,8)

H=(x2, y2)=(10,12)


so,

now, we can find


so, point is
.................Answer
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First you do: -3 (2x-4)
You get: -6x+12
Now you have: 5x-6x+12
5x-6x=-x
Now you have: -x+12
-x+12=12-x
So yes: 5x-3(2x-4)=12-x
Hey did you ever get the answer?