IV. Add and A. Calculate the léast common denominator (LCD) for each sum and difference. Describe any restriction(s) for the value of x. 登+ X- 2 x² 1. + X+ 1 3. 12 6. x+1- X- 1 (x² + x) 3. Х- 4. *+ A+ 8 3 x2 +1 2x 12x²+24+2x3 +ax (a) (x) (4) (x x3+6x?+x+ 3x + 4 4x3+8X X- 3 X - 1 2x x² - 1 %3D 7. + 3x X - 2 2x + 4 + 8. X- 3 - 2x+3 an) 2x2 + 7x + 6 X-3 *2 ning, Inc.

Q: Add  z-9/z+9+z+7/z-7

A: Given information:

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