Question

resolver as seguintes equações  ( na incógnita x):
5/x-2=1/4 (x diferente de 0)

Answer 1

$\frac{5}{x}-2 =\frac{1}{4}\\\\ (\frac{5}{x}-2)*4=1\\\\ \frac{20}{x}-8=1\\\\\frac{20}{x}=9\\\\x=\frac{20}{9}$

:.

Answer 2

$\frac{5}{x-2}=\frac{1}{4}\\ \\ x-2=5*4\\ \\ x-2=20\\ \\ x=20+2\\ \\ \boxed{x=22}$