Posted by **George** on Sunday, September 1, 2013 at 5:06pm.

I am completely lost...please anyone can anyone help?

x = 2+y x and 2 are in inches then it says solution y=x(in) - a(in)

- Algebra -
**Steve**, Sunday, September 1, 2013 at 7:11pm
They're just telling you the units. Algebraically,

x = 2 + y

y = x - 2

and all terms are in inches (in).

Carrying those in around may seem trivial here, but when you start doing problems in physics and chemistry, knowing the units can be a life saver!

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