9x > 81
so
9x > 81
__ __
9 9
x > 9
BUT WHEN THE Inequality has a NEGATIVE number multiply or dividing the X, then we have to SWITCH DIRECTION.
-9X > 81
-9x > 81
__ __
-9 - 9
x < -9
Cancel TOP and BOTTOM
TIPS about slices of pizza
How tall is the tree?
TRIANGLES
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