Question

Solution of equations 3X-5 y=-1 and x-y=-1 is
A) x=2, y = -1 6 X = -2, Y = -1

c) X:-2, Y = 0 D): 1,8:1.​

Answer 1

Answer:

x = -2

y = -1

Step-by-step explanation:

3x - 5y = -1   L1

 x -   y = -1   L2

x = -1 + y       Remplace in L1

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

-3 + 3y - 5y = -1

3y - 5y = -1 + 3

-2y = 2

y = 2/-2

y = -1

x = -1 + y

x = -1 - 1

x = -2