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Addition and Subtraction of Rational Expressions

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Please solve the attached addition and subtraction rational expressions.

Solve following addition and subtraction of rational expressions:

1. x-7 - 4
3 3

2. 1 + x+2
x x

3. 4x - 3 - 2x+8
x-7 x-7

4. x^2 + 9_
x+3 x+3

5. x^2 + 2x - x^2+5x+6
3x 3x

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Solve following addition and subtraction of rational expressions:

1. x-7 - 4
3 3

Answer -
Taking the LCM...which is 3 as we can see...

Now, doing the subtraction -

the answer....

2. 1 + ...

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