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okay so letamp;#39;s talk about adding and subtracting rational expressions step by step now the first thing that we want to do when we are adding or subtracting rational expressions is to make sure that we have a common denominator and you can see in this first example i have a common denominator which is awesome so once you have the common denominator all youamp;#39;re simply going to do is apply your operation either subtraction or addition to the numerators and you can just write your expression under the common denominator in this case x minus 1. so therefore i could have x minus 1 which is my common denominator right they both share they both have x minus 1 as a denominator and then i can just write x plus 1 minus and x plus 2. now again notice i automatically wrote the parentheses but a lot of students will forget to write the parentheses and theyamp;#39;ll just write it like that and be careful because if you write it like that you weamp;#39;re not thatamp;#39;s this is ju
