Question

Solve for x. State any restrictions on the variables.
ax+bx-1=8

Answer 1

keep all terms with x on one side, and move everything else to the other.

Answer 2

ax+bx=8+1
x(a+b)=9
x=9/(a+b)

Answer 3

There is a restriction on the denominator, a+b != 0, a != -b

Answer 4

!= is a "not equals" sign