# Week 13 – Precalc 11

For the thirteenth week of Precalc 11,  we continued learning about rational expressions and equations.

For example:

$\frac{5}{x+4}=\frac {3}{x-3}$

First, you would want to multiply each side by the common denominator  $(x+4)$ and $(x-2)$ , which would make the equation become:

$(x-2)(5) = (x+4)(3)$

then you would multiply the brackets which would turn the equation into:

$5x-10 = 3x+12$

after that, you would just solve from here moving the 3x to one side then moving the 10 too the other side which would have the equation end at:

x = 11