13. If I || m, find the values of x and y.
(7x+12)
(12x-28)
(9y - 77)

i think it would be x=-28 y=-31.9

Step-by-step explanation:

7x+12=12x-28

9y-77=12x-28

x=-28

9y-77=12(-28)-28

9y-77=-364

+77 +77

9y=-287

— —

9 9

y=31.9

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