Answer:
x+14
Step-by-step explanation:
(12+x)+2
12+x+2
x+(12+2)
x+14
so.... since the number after .81 is 1, it doesn't really round up to .82, so is just that, 15.81.
The keyword is "sum" which tells you x, y, and z are being added. One half of the sum means that the sum of the three numbers is going to be divided by 2.
x + y + z
------------
2
Please specify, are we multiplying, adding, dividing or subtracting? Or am I supposed to transform these into number form?
If I am understanding the question, and assuming the living room is a rectangle, then the border should be 80 ft
