Answer:
y is -1
x is 5
Step-by-step explanation:
x+2y=3.........equation 1
2x+y=9........equation 2
substitution method
x=3-2y
substitute into equation 2
2(3-2y)+y=9
6-4y+y=9
6-3y=9
-3y=9-6
-3y=3
y=3÷-3
y= -1
substitute into any equation
lets use equation 1 to find x now that we know our y is -1
to find x would be
x+2(-1)=3
x-2=3
x=3+2
x=5
