Question 227986
{{{(7r)/(12)}}}={{{(-14)/(1)}}}

In this equation, you would cross multiply.

{{{(7r)(1)}}}={{{(12)(-14)}}}

After multiplying:
{{{(7r)}}}={{{(-168)}}}

Now you would solve for r, you would want to get r by itself.
Divide 7 from both sides of the equation.
{{{(7r)/(7)}}}={{{(168)/(7)}}}

After dividing:

{{{r}}}={{{24}}}