Question

resolva as seguintes equacoes (na incognita x) 5/x-2=1/4(x diferente 00

Answer 1

(5/x) - 2 = 1/4
5/x - 2x/x = 1/4
(5-2x)/x = 1/4
x = 4(5-2x)
x = 20-8x
x+8x = 20
9x = 20
x = 20/9

Answer 2

5/x-2 = 1/4     
5 = (x-2).1/4
5 = x-2/4 
5.4 = x - 2
20 = x - 2
x = 20 + 2
x = 22

Prova real:
5/x-2 = 1/4
5/22-2 = 1/4
5/20 = 1/4
0,25 = 0,25