Question

Find the mean of

$\frac{}{x} - z \: = \: 3$
And

$\frac{}{x} \: + \: z \: = \: 45$
​

Answer 1

Answer:

1/x-z=3

1/x+z=45

1/x+1/x=3+45

2/x=48

48x=2

x=2/48

x=1/24