Addition and Subtraction

3/2+7/4 first: find the common denominator
6/4+7/4 2nd: when you already get the 2 which is the denominator ,multiply it with 3and 2
13/4 3rd: that will be the answer



6/x +7/2x first: find the common denominator
2(6/x)+7/2x 2nd: when you already get the 2 which is the denominator ,multiply it with 6and x
19/2x 3rd: that will be the answer


4/x+3 -5/x-2 first: find the common denominator
x-2(4/x+3) - x+3(5/x-2)2nd : multiply x-2 to 4/x+3 and multiply the x+3 to 5/x-2
4x-8-5x-15/(x-2)(x+3) 3rd: simplify them
-x-23/((x-2)(x+3) 4th :that will be the answer



just always remember that any expression should be simplified before you add it or subtract it.

and if the denominator is like this x2 +2x-15 always factor it then cancel.



EXERCISE NO........49 1-19



ANA SORIA IT'S YOUR TURN