Problem: why is this solution undefined.solve problem and show steps
Why is this solution undefined. Solve the problem and show the steps.
y - 7 2
Solve: --------- = --------
y - 9 y - 9
y - 7 2
--------- = --------
y - 9 y - 9
y - 7 2
--------- * (y - 9) = -------- * (y - 9)
y - 9 y - 9
y - 7 = 2
y - 7 + 7 = 2 + 7
y = 9