Question

x-y=-2
2x - y = -1
Elimination
method​

Answer 1

Answer:

x-y= -2 ................(i)

2x-y = -1..................(ii)

multiply equation (i) by 2

2x-2y = -4.........(iii)

2x-y= -1................(iv)

subtract eq(iv) from (iii)

-2y +y = -4+1

-y= -3

y=3

put the value of y in eq(i)

x-3= -2

x = 1

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