Answer:
[tex]f = 7s -2[/tex]
[tex]f + s =53[/tex]
Step-by-step explanation:
Given
Let
f = Father's age
s = Son's age
We'll solve this question, while reading through the instructions
From the first statement;
f is 2 less than 7 times s.
This means
[tex]f = 7s -2[/tex]
In two years time, the father will be f +2 and the son will be s + 2
So, their sum is:
[tex](f+2) + (s + 2) = 57[/tex]
[tex]f + 2 + s + 2 =57[/tex]
Collect like terns
[tex]f + s =57-2-2[/tex]
[tex]f + s =53[/tex]
So, the equations are:
[tex]f = 7s -2[/tex]
[tex]f + s =53[/tex]