Question

$3 x + 5y = 1 \\ 4 x + 2y = 6$

Answer 1

1))
$3x + 5y = 1 \\ 3x = 1 - 5y \\ x = \frac{1}{3} - \frac{5}{3}y$

2))
$4x = 6 - 2y \\ x \frac{3}{2} - \frac{1}{2}y \\ x = \frac{3}{2} - \frac{1}{2}$

Answer 2

12x+20y=4........(1)   multipliquei por 4

12x+6y=18.........(2)   multipliquei por  3

(1)-(2)

12x-12x+20y-6y=4-18

14y=-14

y=-14/14

y=-1

Em:

3x+5y=1

3x-5=1

3x=1+5

3x=6

x=6/3

x=2

Resposta:  x=2   e   y=-1