Respuesta :
Step-by-step explanation:
please refer to the attachment

Substitution Method
{ -8x+10y=16
{ 4x-5y=13
{ -8x+10y=16
{ x=13/4+5/4y
-8(13/4+5/4y)+10y=16
No solution
——
Elimination Method
{ -8x+10y=16
{ 4x-5y=13
{ -4x+5y=8
{ 4x-5y=13
0=21
Still, there is no solution.
{ -8x+10y=16
{ 4x-5y=13
{ -8x+10y=16
{ x=13/4+5/4y
-8(13/4+5/4y)+10y=16
No solution
——
Elimination Method
{ -8x+10y=16
{ 4x-5y=13
{ -4x+5y=8
{ 4x-5y=13
0=21
Still, there is no solution.