Answer:
but dude what to answer............
Let f and s be the ages of the father and the son. We have

From the first equation we derive

Substitute this expression for f in the second equation and we have

The solutions to this equation are s=5 or s=37
Since the sum of the ages must be 42, the solutions would imply

We can only accept the first solution, since the second would imply a son older than his father!
Answer: 40, 48 and 56
Step-by-step explanation:
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
The second one! I took this recently :)
The value of x is 
Explanation:
The expression is
Adding
to both sides of the equation, we get,

Using log definition, if
then
, we have,

Using exponent rule,
,

Simplifying, we have,

Dividing both sides by 9, we have,

Simplifying,

Thus, the value of x is 