SOLUTION: The sum of two numbers is -12.43 and their difference is 117.77 (I tried adding two negative numbers to equal -12.43, but nothing large enough to have a difference of 117.77.

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: The sum of two numbers is -12.43 and their difference is 117.77 (I tried adding two negative numbers to equal -12.43, but nothing large enough to have a difference of 117.77.      Log On


   

Question 380522: The sum of two numbers is -12.43 and their difference is 117.77

(I tried adding two negative numbers to equal -12.43, but nothing large enough to have a difference of 117.77.
Answer by mananth(16949) About Me  (Show Source):
You can put this solution on YOUR website!
x+y = -12.43
...
x-y = 117.77
..
add the two equations
2x=105.34
/2
x=52.67
...
plug value of x in first equation
52.67+y=-12.43
-52.67
y=-12.43-52.67
y = -65.10
...
m.ananth@hotmail.ca