Amy: x skirts
Betty: 2x skirts
Carol: (2x) + 7 skirts
If Amy has 18 less than Carol, than Carol's equation minus 18 equals Amy's equation:
[(2x) + 7] - 18 = x
+18 +18
(2x) + 7 = x + 18
- 7 -7
2x = x + 11
-x -x
x = 11
Input the solution for x into the girls equation to double check.
Amy: 11
Betty: 2(x)
2(11)
=22
Carol: (2x) + 7
22 + 7
=29
Does Amy have 18 less than Carol?
Carol - Amy = 18
29 - 11 = 18
18 = 18
the problem is solved
Answer:
9
Step-by-step explanation:
<em>In order to find this answer you need to determine what it is really saying </em>
<em>It took me a few times to read this but i determined what you need to do is :</em>
<em>count down from every number </em>(-1 to -9) <em>until you can come up with </em>-15.
<em />
<em>At this point you can determine the answer is </em><em>9</em><em> </em>
<em>Hope this helps</em>
<em>stay safe:))))</em>
<em>brainliest is appreciated :)</em>
18 people x 18 walls = 324 minutes
