SOLUTION: Please show me how to work this difference of 2 rational expressions, reduced to its lowest terms.
y / 7x - x-2 / 2y
or: Y divided by 7x minus x-2 divided by 2y.
Your help
Algebra ->
Polynomials-and-rational-expressions
-> SOLUTION: Please show me how to work this difference of 2 rational expressions, reduced to its lowest terms.
y / 7x - x-2 / 2y
or: Y divided by 7x minus x-2 divided by 2y.
Your help
Log On
Question 185925: Please show me how to work this difference of 2 rational expressions, reduced to its lowest terms.
y / 7x - x-2 / 2y
or: Y divided by 7x minus x-2 divided by 2y.
Your help is greatly appreciated! Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Please show me how to work this difference of 2 rational expressions, reduced to its lowest terms.
[y / 7x] - [(x-2) / 2y]
If you are adding or subtracting fractions you need a least common denominator:
You lcd is 14xy
--------------------
Rewrite each fraction with the lcd as its denominator:
[2y^2/lcd] - [7x(x-2)/lcd]
Now you can subtract to get:
[2y^2 - 7x(x-2)]/lcd
Now simplify the numerator:
[2y^2 - 7x^2 + 14x]/[14xy]
--------------------------------
Cheers,
Stan H.
(