Answers

2016-06-19T22:27:15+08:00
1.) A number added to twice of the sum of 3 and 2
   >>> 2(3+2)+n

2.) The product of two numbers is 20
  >>> xy=20

3.) The sum of the square of a number and 7 is equal to the square root of 121.
  >>> x²+7=  \sqrt{121}

4.) A number is 8 more than another number.
   >>> n=8+x

5.) A number increased by thirteen is twenty.
   >>> x+13=20

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