SOLUTION: If x + y = 1.3 and x - y = 0.9, what is y? I've tried to work this out, I know that 1.3-x=y, and 0.9-y=x, but I am lost as to where to go from there. Thank you for any assistan

Algebra ->  Equations -> SOLUTION: If x + y = 1.3 and x - y = 0.9, what is y? I've tried to work this out, I know that 1.3-x=y, and 0.9-y=x, but I am lost as to where to go from there. Thank you for any assistan      Log On


   

Question 623982: If x + y = 1.3 and x - y = 0.9, what is y?
I've tried to work this out, I know that 1.3-x=y, and 0.9-y=x, but I am lost as to where to go from there. Thank you for any assistance as to how to go about solving this.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

This System of EQuations lends to solving by first Eliminating the y

x + y = 1.3 

x - y = 0.9

 2x = 2.2

  x = 1.1   and y = .2    ||As You listed y = 1.3-x