If the discount rate is 20%, how much would the discount be on a pair of boots that cost $75?
1 answer:
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-x - 9 
You want to get x by itself.
First subtract 9 from both sides of the equation.
-x - 9
+9 +9
-x
Then divide -1 on both sides.
-x/-1
I'm pretty sure when you divide a negative number when solving inequalities, you switch the sign.
x
You want to get x by itself.
First subtract 9 from both sides of the equation.
-x - 9
+9 +9
-x
Then divide -1 on both sides.
-x/-1
I'm pretty sure when you divide a negative number when solving inequalities, you switch the sign.
x