solve by the elimination method
4x-9y=6.5
7y-2x=-4.5

Question

anonymous · Answer

4x-9y=6.5  
-2x+7y=-4.5 X 2

=>  4x- 9y  = 6.5
      -4x+14y = 9
     ----------------
       5y = 15.5
        y = 3.1

=> 4x-9*3.1=6.5
=> 4x-27.9 = 6.5
=> 4x = 34.4
=> x = 8.6

Ans: x=8.6, y=3.1

anonymous · Answer

that solution is not correct

anonymous · Answer

Oh, sign mistake! I'll do it again :)

anonymous · Answer

4x-9y=6.5  
-2x+7y=-4.5 X 2

=>  4x- 9y  = 6.5
      -4x+14y = -9
     ----------------
       5y = -2.5
        y = -0.5

=> 4x-9*-0.5=6.5
=> 4x+4.5 = 6.5
=> 4x = 2
=> x = 0.5

Ans: x=0.5, y=-0.5

anonymous · Answer

Is that right?

anonymous · Answer

yes thank u.. can u help me with some others??