Dear student,
Please view the below mentioned method to find the value of the variable in the linear equations presented by you.
8 - x = -1
- x = - 1 - 8
- x = - 9
9 = x ( By transposing both the variable and the constant simultaneously )
I hope the aforementioned method to find the value of the variable x will help you solve future problems regarding linear equations.
Regards.