1st multiply out the brackets:
y = 4x + 8 / 5x - 1
Next multiply both sides by the denominator onf the RHS:
y(5x-1) = 4x + 8
Again, multiply out the brackets:
5xy - y = 4x + 8
Rearrange the equation so that all terms with x are on the LHS:
5xy - 4x = y + 8
Factor out the x:
x(5y-4) = y + 8
Divide both sides by the brackets to make X the subject of the equation:
ANSWER
x = y + 8 / 5y - 4