Question

Resolver as seguintes equação (na incógnita x):
a)
$\frac{5}{x} - 2 = \frac{1}{2}$
b)
$bxc + 8bc = 5bxc + 4bc$
​

Answer 1

5/x - 2 = 1/2

5/x = 2 +1/2

5/x = 5/2 ===> :(5)

1/x = 1/2

x = 2

bxc + 8bc = 5bxc + 4bc ==> :(bc)

x + 8 = 5x + 4

x -5x = 4 -8

-4x = -4

x = 1