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3 years ago

Help me with 14x+1=36

Mathematics

2 answers:

FinnZ [79.3K]3 years ago

4 0

14x+1=36 subtract 1 from both sides
14x=35
----------

35/14=2.5
14x/14=x

x=2.5

Alenkinab [10]3 years ago

3 0

14x+1=36
-1 -1
14x=35
/14 /14
x=2.5

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We know that:

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and all we have to do is solve it for a, b and r.

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From equations (II) and (III) we have:

$\begin{cases}a^2+b^2-2b+1=r^2\\a^2+b^2+4a+2b+5=r^2\end{cases}\\--------------(-)\\\\a^2+b^2-2b+1-a^2-b^2-4a-2b-5=r^2-r^2\\\\-4a-4b-4=0\qquad|:(-4)\\\\\boxed{-a-b-1=0}$

and from (I) and (II):

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Now we can easly calculate a and b:

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