How do you simplify rational expressions and state restrictions on variables for #(3x + 6)/ (5x + 10)#?
Factorise the expression as far a possible.
Now you can cancel the common factors.
(3cancel(x+2))/(5cancel(x+2) = 3/5#
For the restrictions, you have to make sure that a value of the variable does not make the denominator equal to
SO in this case,