Respuesta :
Answer: 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
Answer:
x=8 y=21
Step-by-step explanation:
7x+12=12x-28
x=8
plug in x
12x8-21=68
68+9y-77=180
y=21
