AshleyRae09
Sep 25, 2009, 07:34 PM
how do you solve a problem like...
solve with add and multiply 5+6x<53
Perito
Sep 25, 2009, 07:45 PM
5 + 6x \lt 53
Add -5 to both sides
5 + 6x -5 \lt 53 - 5
6x \lt 48
Now multiply by 1/6
\frac {6x}{6} \lt \frac {48}{6}
x \, \lt \, 8
If ever you multiply or divide by -1, you need to change the "sense" of the inequality ("<" changes to ">" or ">" to "<", for example). If you ever have to divide or multiply by "x", you need to make sure (at the end) that "x" is positive. Otherwise, the sign changes.