A. Let Us Study- Consider the following verbal sentences. 1. A number increased by 5 is 12. 2. The sum of two numbers is 8. If the first number is 3. what is the second number? If we let x the unknown number, how can these sentences be translated into mathematical equations? What is the value of x The first sentence can be translated to mathematical equation as: A number 12 increased by 5 is 5 12 х Solving the equation, we have: x+5 = 12 x+5-5 = 12-5 Subtract 5 from both sides.x=0 = 7 x = 7 To check the solution, substitute 7 for x in the equation. x+5 = 127+5=12 12= 12 The second sentence can be translated to mathematical equation as: Let x be the second number. Since the first numberis 3, then, the equation is 3+x=8. 1​