Question

If a – b =6 and 2a – b =4 , then



a = - 2 , b = -8

a = 2 , b = - 6

a = - 2 , b= 8

a =3 ,b =4

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Answer 1

Answer:

$a - b = 6 \\ a = 6 + b \\ \\ put \: the \: value \: of \: a \: in \: second \: eq - \\ 2(6 + b) - b = 4 \\ 12 + 2b - b = 4 \\ b = - 8\\ \\ a - b = 6 \\ a = - 2$

Answer 2

Answer:

a= -2, b= -8

Step-by-step explanation:

a – b =6 ......(i)

2a – b =4 ......(ii)

Subtract equation (ii) from equation (i), we get

-a=2

a=-2

Substitute the value of a in equation (i), we get

-2-b=6

-b=6+2

-b=8

b=-8

Therefore, a = - 2 , b = -8