x-2y= -5
x= -5+2y
2x+y= -5
2*(-5+2y)+y= -5
-10+4y+y= -5
-10+5y= -5
5y= -5+10
5y= 5 Diwide both sides with 5
y=1
x= -5+2y
x= -5+2*1
x= -5+2
x= -3
Solution:
x= -3 y= 1
Checking of result:
x-2y= -5
-3-2*1= -5
-3-2= -5
-5= -5
OR
2x+y= -5
2*(-3)+1= -5
-6+1= -5
-5= -5
x-2y= -5
2x+y= -5
1 answer