Quandaries
and Queries 

who is asking:student and I have another question 

Hi, Look at the first two equations
In the second equation add 5y to each side to get
Thus I "solved for x in terms of y", in other words I have x = (some expression involving y but no x). Now take this expression for x and substitute it into the first equation
Now simplify
Finally, since y = 7 you can substitute that value into x = 27 5y to get
Hence x = 8 and y = 7. I could have started by "solving the first equation for x in terms of y" or either equation "for y in terms of x" but I made the choice I did since I could proceed without using fractions. Now you try the second problem and write back it you have difficulty. Penny 

