Posted by **A.W.** on Sunday, March 22, 2009 at 4:33pm.

Solve using the addition and mulitplication method principles. 4+9x<13. Is this right? 4-4 +9x<13-4

9x/9> 9/9

x>1?

- Algebra. -
**drwls**, Sunday, March 22, 2009 at 4:36pm
No, you should not have changed the direction of the <, since you divided by a positive number.

- Algebra. -
**GanonTEK**, Sunday, March 22, 2009 at 4:36pm
almost, the < sign only changes to a > sign when both sides are multiplied by a minus.

so the answer is x<1

Hope that helps

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