Sorry everything has been moved to the left a little.
Hello, joe345!
Multiply by
Expand: . . . . . . . .
Get all y-terms to one side:
. . . . . . . . . . .
Factor: . . . .
Divide by
Multiply by
[The last step is not necessary, but the answer is neater.]
Cross-multiply: .
Expand: . . . . . .
Get y-terms on one side:
. . . . . . . . .
Factor: . . .
Divide by
Multiply by