yo help maybe? Idk :P

Find b: 5a/c - y - d/b =z

$\color{red}\frac{5a}{c}-y-\frac{d}{b}=z\\-\frac{d}{b}=z+y-\frac{5a}{c}\\-\frac{d}{b}=\frac{cz+cy-5a}{c}$

$-\frac{b}{d}=\frac{c}{cz+cy-5a}\\\color {blue}b=\frac{cd}{5a-cz-cy}$

Find m: 4n/ab - c/m=x

$\color{red}\frac{4n}{ab}-\frac{c}{m}=x\\-\frac{c}{m}=x-\frac{4n}{ab}\\ -\frac{c}{m}=\frac{abx-4n}{ab}\\ -\frac{m}{c}=\frac{ab}{abx-4n}$

$m=\frac{abc}{4n-abx}$

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