Respuesta :
Answer:
x=1, y=1. (1, 1).
Step-by-step explanation:
4x+5y=9
-x+5y=4
-------------
4x+5y=9
4(-x+5y)=4(4)
--------------------
4x+5y=9
-4x+20y=16
----------------
25y=25
y=25/25
y=1
4x+5(1)=9
4x+5=9
4x=9-5
4x=4
x=4/4
x=1
Answer:
x=1, y=1. (1, 1).
Step-by-step explanation:
4x+5y=9
-x+5y=4
-------------
4x+5y=9
4(-x+5y)=4(4)
--------------------
4x+5y=9
-4x+20y=16
----------------
25y=25
y=25/25
y=1
4x+5(1)=9
4x+5=9
4x=9-5
4x=4
x=4/4
x=1