Adding and Subtracting Rational Expressions
posted by Mike .
Can someone PLEASE show me how to solve these?I never could understand these types of equetions.(3x/10)+(9x/10)
(n2/n+4)+(8/[n+4])
(5m+8/[m1])  (m3/[m1])
(x^2/[x1])  (1/[x1])
(4x+y/[2x+3y])(2x 2y/[2x+3y])
(x^2+3x+2/[x^216] + (3x++6/[x^216])
7/(x5)  (2+x/[x5])
Since they are not equations, they cannot be "solved," but they can be simplified.
(n2/n+4)+(8/[n+4])
Since both have a denominator of n+4, the numerators can be combined.
(n2+8)/(n+4) = (n+6)/(n+4)
The same process can be used with the other expressions.
I hope this helps. Thanks for asking.
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