book Maths Puzzle Numerical Ability

I seem to be having issues with the equations with fractions in them. I'm getting frustrated because just when I think I have it down, I end up with the wrong answer. If you can

Read Solution (Total 0)

book Other Question

find the solution of each equation for x=-3,0,and 2.

the problems are
x-2y=3 and y=-x-1.5 This is for a discussion board and I need to know how to explain this:

Using the index of a sequence as the domain and the value of the sequence as the range, is a sequence a fu