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Try undoing the operations in reverse precedence order to isolate the variable.
I am an experienced math teacher and tutor.
New to this very interesting forum, I am rather astonished and disappointed that some knowledgeable responders just give a student the answer, as above, rather than ask the appropriate questions to the poster to guide the student to the answer.
I am thinking the equation as posted was intended for the 49x to be in the denominator, but was mis-written - should have therefore been written as (49x).
If that is the case, then it becomes a cubic equation.
I graphed the cubic for an approximation to its one real root.
Sounds to me that you are saying you don't know the distributive rule: a(b + c) = ab + ac.
That's pretty fundamental. You should know this before doing inverse functions.
If you DO know it, then use it here: -1/5 (-5x + 3)
and then simplify further.
Have you tried reversing x and y in one and then rewriting it as an f(x) ?
That's the usual way.
“I just got back from the annual Fibonacci conference.”
“Did you enjoy it?”
“Yes – it was as good as the last two put together.”