Simplifying a Rational Expression

I have no clue how to answer this, can someone please run me through it?

a) 1+4b/2a - 3/4a + 3 (subtraction)
b) 2 - 1/2n + 3+m/mn (addition)

Quote:

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Originally Posted by Namis9

I have no clue how to answer this, can someone please run me through it?

a) 1+4b/2a - 3/4a + 3 (subtraction)
b) 2 - 1/2n + 3+m/mn (addition)

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You need to put paranthesis.
Otherwise you are not going to get answered.

Note if you have,

Then you do not write,
1+x/y.
Rather you must write,
(1+x)/y
That says which is untop.

Oh, sorry.

Ok, here it is.

(1+4b)/2a - (3)/4a +3

and

2 - (1)/2n + (3+m)/mn