8x -2y + x+x
simply combine like terms
8x+ x + x= 10x
therefore
10x-2y is equivalent
We will need a little more to answer on that that please.
What is 2 plus 2 add 14 subtract 6
2+2+14-6=
12
Answer:

Step-by-step explanation:
As we can see the given expression as three complex parts and all are being multiplied.
Lets simplify each part separately and then multiply all of them in the end
Part1
Cancelling 8 in numerator with 8 in denominator



Part2

simpliying



Part3
Third part is
, and it does not need to be further simplified
Now multiplying all the three parts





So our final answer is 
Answer:
6.2 meters
Step-by-step explanation:
1) area = l*w
74.4 = 12x
x=6.2