Principles of Economics 2e
2nd Edition
ISBN:9781947172364
Author:Steven A. Greenlaw; David Shapiro
Publisher:Steven A. Greenlaw; David Shapiro
ChapterD: The Expenditure-output Model
Section: Chapter Questions
Problem 21CTQ: Exercise D21 What are some reasons that the economy might be in a recession, and what is the...
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Question
how do they get from the first line of the question mark to the second?
Expert Solution
Step 1
Pxx +Py (x Px2 / Py2) = I
If we take Pxx common from the above equation (we have to divide each term with Pxx):
Pxx (1 + x Py Px2/ x PxPy2) = I
Now cancelling the common terms:
Pxx (1 + Px/ Py) = I
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