SOLUTION: The sum of three times a number and 7 more than the number is the same as the difference between -11 and twice the number. What is the number?

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Question 408118: The sum of three times a number and 7 more than the number is the same as the difference between -11 and twice the number. What is the number?
Answer by Tatiana_Stebko(1326) About Me  (Show Source):
You can put this solution on YOUR website!
Let x - the number
Then three times a number is 3x, 7 more than the number is x%2B7
Difference between -11 and twice number (2x) is -11-2x
Equation
3x%2Bx%2B7=-11-2x
3x%2Bx%2B2x=-11-7
6x=-18
x=-18%2F6
x=-3 - the number