Question

2.(x-1) = 3. (y+1)
x-3y= y+5

Answer 1

2.(x - 1) = 3.(y + 1)
2x - 2 = 3y + 3
2x - 3y = 3 + 2
2x - 3y = 5

x - 3y = y + 5
x - 3y - y = 5
x - 4y = 5

2x - 3y = 5
x - 4y = 5      ( - 2)

  2x - 3y = 5
- 2x + 8y = - 10 (+)
         5y = - 5
y = -5/5
y = - 1

x - 4y = 5
x - 4.(-1) = 5
x + 4 = 5
x = 5 - 4
x = 1

R.: x = 1 e y = - 1