Answer :D
2530
Question explanation:

<em>I'm truly sorry if this is incorrect - Answered by Lilo</em>
Answer:
the answer is 12 inches
every inche equals 15 feet from 30/2 then divide it by the total 180/15 which equals 12
-1-4x+7x=1x+4x
-1-4x+7x=1x+4x
-1+-4x+7x=x+4x
(-4x+7x)+(-1)=(x+4x)
3x+-1=5x
3x-1=5x
3x-1-5x=5x-5x
-2x-1=0
-2x-1+1=0+1
-2x=1
-2x/-2=1/2
x=-1/2