Question

Is u = - 1/2 a solution of 8u - 1 = 6u

Answer 1

No, u = - 1/2 is not a solution of 8u - 1 = 6u

Explanation:

`8u - 1 = 6u \\ 8u - 6u = 1 \\ 2u = 1 \\ \\ u = (1)/(2)`

here we get u = +1/2

Answer 2

-1/2 is not a solution

Explanation:

8u-1 = 6u

Subtract 8u from each side

8u-1 -8u = 6u-8u

-1 = -2u

Divide each side by -2

-1 /-2 = -2u/-2

1/2 = u