I have a problem where I have solved for Y and need to now solve for X. I am having trouble solving for X.
Y = (X/2) * (PX/PY)
X = (M/PX) - ((Py/PX) * Y))
Subsituting Y in to the equation gives:
X = (M/PX) - ((Py/PX) * ((X/2)*(PX/PY)))
I am having trouble working out the steps to break this down. I wrote the answer in my notes from class as:
X = (2M)/(3PX)
But I'm getting stuck on working out the steps.
Here is what I do:
Py/PX cancels out, so you are left with:
X = (M/PX) - (X/2)
Then I move X to one side:
(X/2) + X = (M/PX)
From here I can't remember what to do. I can't tell if I wrote the answer down wrong, or if I am just rusty. I am not sure how we get to: X = (2M)/(3PX)
Any help would be great. Thanks.