Pls do an elimination method to find x and y.! pls me it's been 1 hour

16)

15x + 7y = -5    ⇒  -10(15x + 7y = -5)   ⇒   -150x - 70y =   50

11x + 10y = -28 ⇒    7(11x + 10y = -28)  ⇒     77x + 70y = -196

                                                                    -73x           = -146

                                                                                   x = 2

11x + 10y = -28

11(2) + 10y = -28

 22 + 10y = -28

         10y = -50

             y = -5

x = 2, y = -5

18)

7x - 4y =  1     ⇒   1(7x - 4y =  1)   ⇒    7x  -  4y =  1

5x + 2y = -9   ⇒ 2(5x + 2y = -9)  ⇒ 10x  + 4y = -18

                                                          17x          = -17

                                                                      x = -1

 7x - 4y =  1

7(-1) - 4y =  1

 -7  - 4y = 1

       -4y = 8

          y = -2

x = -1, y = -2

because they could drop even lower..

.there can be infinite values of m and n that can satisfy the above equation. for each value of m of m or n. there maybe infinite sets of solution for the above

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