+128731 Notice that, if we add the equations, we can "eliminate" X....so we have
3X - 4Y = 9
+ (-3X + 2Y = 9) This gives us
-2Y = 18 divide by -2 on both sides
Y = -9
To find X, just substitute for Y in one of the equations....I'll use the first one
3X - 4(-9) = 9
3X + 36 = 9 Subtract 36 from both sides
3X= -27 Divide by 3 on both sides
X= -9
And here's the solution ...... (X , Y) = (-9 , -9)
You should check this answer in both equations to verify for yourself.
+128731 Notice that, if we add the equations, we can "eliminate" X....so we have
3X - 4Y = 9
+ (-3X + 2Y = 9) This gives us
-2Y = 18 divide by -2 on both sides
Y = -9
To find X, just substitute for Y in one of the equations....I'll use the first one
3X - 4(-9) = 9
3X + 36 = 9 Subtract 36 from both sides
3X= -27 Divide by 3 on both sides
X= -9
And here's the solution ...... (X , Y) = (-9 , -9)
You should check this answer in both equations to verify for yourself.
