Question

solve the given pair using substitution method
3x - 5y = -1
x - y = -1​

Answer 1

Answer:

(x,y) = (-2 , -1)

Step-by-step explanation:

Given Equations,

       3x - 5y = -1

       x - y = -1   ⇒ x = y - 1

Sub x = y - 1 in 3x - 5y = -1

   3(y - 1) - 5y = -1

   3y - 3 -5y = -1

   2y = -2

     y = -1

Sub y= -1 in x = y - 1

     x = -1 - 1

     x = -2  

Answer 2

Answer:

X=-2& Y=-1

Step-by-step explanation:

X-Y=-1

Then, X=-1+Y.............................................................................................(1)

SUBSTITUTE EQUATION (1) IN 3X-5Y=-1

3(-1+Y)-5Y=-1

-3+3Y-5Y=-1

-2Y=2

Y=-1

NOW SUBSTITUTE THE VALUE OF Y IN (1)

X=-1-1=-2