At the same rate, 31 inches of wire will cost 124 cents.
The bold number (10) is the difference because it is calculated by subtracting two numbers.
179/1018=.17580
.17580*100=17.6%
It's 5.
1/2 can also be written as 4/8.
So, it's 3 and 4/8 plus 1 and 4/8.

Lets add 2 equations

Now we need to put x into any equation

Answer: (-2; 8)