Question

x-y=-1 2x+y=10 elemenation method​

Answer 1

Answer:

x = 3

y = 4

Explanation:

x - y = -1......(i)

2x + y = 10.....(ii)

Multiply equation (i) by 2

=> 2 × (x - y = -1)

=> 2x - 2y = -2....(iii)

Now subtract (ii) from (iii)

=>

2x - 2y = -2

- 2x ± y = ± 10

=> -3y = -12

=> y = -12/-3

=> y = 12/3

=> y = 4

Now put the value of y in eq. (i)

=> x - y = -1

=> x - 4 = -1

=> x = -1+4

=> x = 3

Hence the value of x and y are 3 and 4 respectively.

hope it helps.