tolong yang jago matematika nomer 3 bagian d dan e

nomor 3 bagian d

2x+3y=8  dan 3x+2y = 7    

2x+3y=8   |x2|  4x+6y=16

3x+2y=7   |x3|  9x+6y=21

                         ------------ -

                           -5x = -5

                              x=-5/-5 = 1

2x+3y=8   |x3|  6x+9y=24

3x+2y=7   |x2|  6x+4y=14

                        -------------  -

                               5y= 10

                                  y=10/5 = 2

Nomor 3 bagian E

4x-3y =0  dan 2x-3y=-6

4x-3y =0

2x-3y=-6

------------ -

       2x=6

         x=6/2=3

4x-3y =0   |x1|  4x-3y=0

2x-3y=-6   |x2|  4x-6y=-12

                        --------------- -

                              3y=12

                                y=12/3 = 4