Respuesta :
Answer:
(x , y) = (8, -9)
Step-by-step explanation:
We have the equations as,
10x + 10y = -10 -------------------------(1)
and
9x + 10y = -18 ---------------------------(2)
Now deducting (2) from (1) we get,
x = 8 ----------------------(3)
Putting the value of x from (3) in (1) we get,
10y = -90
⇒y = -9 --------------------(4)
So, from (3) and (4) we get that,
(x , y) = (8, -9) (Answer)
