Question

(ii) x - 2y = -1; 2x - y = 7​

Answer 1

Answer:

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Step-by-step explanation:

x-2y=-1 (1)

2x-y=7 (2)

x=2y-1

putting the value of x=2y-1 in equation 2

2(2y-1)-y=7

4y-2-y=7

3y=7+2=9

y=3

now,

putting the value y=3 in equation 1

x-(2×3)=-1

x-6=-1

x=-1+6

x=5