Question

resolva:
{3x+5y=1
{4x+5y=3

{3x+2y=3
{x-y=4

{4x-2y=0
{x-4y= -7
me ajudem por favor

Answer 1

Resposta:

a-

x = 2

y = -1

b-

x = $\frac{11}{5}$

y- $-\frac{9}{5}$

c-

x = 1

y = 2