Question

Me ajudem com essa tarefa pfpfpf

Answer 1

2x-3y=12 (-3)
3x-3y=15 (+3)

-6x+9y=-36
+9x-9y=+45
3x=9
x=9/3
x=3

2(+3)-3y=12
6-3y=12
-3y=6
y=6/-3
y=-2

Resposta: Let.C