-4/9=3/n __/(decimal)
Using moving method:
-4/9=3/n
-4/27=1/n
So, n = -27/4 = -6.75
-4/9=3/n __/(decimal)
Using moving method:
-4/9=3/n
-4/27=1/n
So, n = -27/4 = -6.75
You may have learned that in a/b = c/d, b and c are called means, while a and d are the extremes.
Use the fact that the product of the means equals the product of the extremes (bc=ad).
In this your case of -4/9 = 3/n, we have:
9*3 = -4n
27 = -4n
-27/4 = n
Thus in decimal, n = -6.75
Comments
Introduction to moving method:
Rule 1: If you move a term from one side of equation to the other side, you change the sign of the term.
Rule 2: If you move a factor from one side of equation to the side, you flip it.