SOLUTION: I need to understanding how to do this question on math. Solve using the addition principle. 2x+9>x+18 The Solution set is {x x>___}.

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Question 375616: I need to understanding how to do this question on math. Solve using the addition principle. 2x+9>x+18
The Solution set is {x x>___}.

Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
2x + 9 > x + 18,
2x - x > 18 - 9,
x > 9.
{x|x > 9}.