Please help me find the Representation, Equation, Solution, Conclusion and the Checking
1) A mother is three times as old as her son. Eight years ago, she was 4 more than five times the age of her son. How old is the mother now
2) The sum of two numbers, x and y, is less than 12. If the first number x is 4 more than second number y, what could be the largest integral value of the second number y?