Question 665928
As an expression,
{{{2/5}}}n + 9
...
If you are solving for n, this needs to be an equation set equal to something.
For example, {{{2/5}}}n+9=0
Isolate n on one side
{{{(2/5)n + cross(9) - cross(9) = -9}}}
...
Multiply both sides by {{{5/2}}}
{{{(cross(5)/cross(2))(cross(2)/cross(5))n = -9(5/2)}}}
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n = {{{(-45/2) = -22.5}}}
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