#### Answer

x=4
3x=12
2+7x=30

#### Work Step by Step

Because you are trying to find the length of each section of the pipe first figure out how long it is as a whole.
46 ft
Now that you know the given set all of the small pieces lengths equal to 46 ft
(x)+(3x)+(2+7x)=46 ft
Combine like terms
11x+2=46
Subtract the 2 from both sides
11x=44
Divide by 11
x=4
Plug 4 into each value for x to see the separate lengths
x=4
3(4)=12
2+7(4)=30
Add them all together to check your work
4+12+30=46