Two different things u can do
Substitution:
X-9y=12
+9y +9y
X=9y+12
-3(9y+12)+9y=36
-27y-36+9y=36
+36 +36
-18y = 72
/-18 /-18
Y = -4
Or whatever this other I’ve is called
-3x-9y=36
-1(X-9y)=(12)-1
-3x-9y=36
-x+9y=-12
-4x=24
X= -6
Answer: a
Step-by-step explanation:
3:2
the greatest common factor amongst 9 and 6 is 3
Answer:
cant factor something that is not like terms its the same answer
Step-by-step explanation: