SOLUTION: A number multiplied by -9, subtracted from the sum of 13 and three times the number

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Question 1083108: A number multiplied by -9, subtracted from the sum of 13 and three times the number
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

let's a number be x
a number multiplied by -9: -9x
the sum of 13 and three times the number:13%2B3x
if -9x subtracted from the 13%2B3x, we have:
13%2B3x-%28-9x%29
=13%2B3x%2B9x
=13%2B12x