E Solve the following problems. Write the solutions in your YELLOW PAD PAPER.
26. Add (4ab-3ab + ab) to the difference of (-5a²b + 7ab) and (a³b + 9ab").
27. Subtract (4x-3y-7) from the sum of (7x + 5y + 8) and (y² + 11)
28. What must be subtracted from (x-y-z) to get a difference of (-2x + y-3z)?
29-30. The length of the rectangular field is (4b + 7) m and the width is (2b + 3) m. A square field has a side of length (36+2) m. Which of the two fields has a longer perimeter? How much longer is it?
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