4) A man is five years less than three times the age of his son. The man is 43 years old. (a) If the son's age is x years, write an expression in x to represent his father's age. (b) State an equation in x which can be used to find the value of x. (c) Hence determine the son's age. 5) I think of a number, multiply it by 3 and divide the result by 2. I then add 4. The result is 19. (a) State an equation that can be used to find the number. (b) Hence find the number. 6 The sum of two consecutive even numbers is 34. (a) Write an equation that can be used to find the numbers. (b) Find the two consecutive even numbers.

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