Answers edited by Niya N.

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A man is four times as old as his son. In five years he will be only three times as old as his son. What is the man's present age?
How do you subtract $\frac{4 x + 5}{5 x - 2} - \frac{3 x - 7}{5 x - 2}$ $(4x+5)/(5x-2)-(3x-7)/(5x-2)$ ?
What is the subject of the following sentence? For once in your life, try something new and exciting.
How do you factor $x^{2} - 5 x + 6$ $x^2-5x+6$ ?
How do you solve $\frac{3}{2} (x - 5) = - 6$ $3/2(x-5) = -6$ ?
How do you solve $- 3 (- x + 4) = - 9$ $-3(-x + 4) = -9$ ?