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Think of it this way..
The shortest distance between 2 points is a straight line.
If the sum of the lengths of 2 side of a triangle = the length of the third, then the "triangle" would collapse to 2 overlapping straight lines.
If the sum of the lengths of 2 side of a triangle is < the length of the third, then the shortest distance between the third line's endpoints would not be that straight line.
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.”