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Questions :
Miscellaneous Practice problems
1. Subtract −3ab −8 from 3ab + 8. Also, subtract 3ab + 8 from −3ab −8.
2. Find the perimeter of a triangle whose sides are x + 3y, 2x + y, x − y.
3. Thrice a number when increased by 5 gives 44. Find the number.
4. How much smaller is 2ab + 4b − c than 5ab − 3b + 2c
5. Six times a number subtracted from 40 gives −8. Find the number.
Challenge Problems
6. From the sum of 5x + 7y − 12 and 3x − 5y + 2, subtract the sum of 2x − 7y − 1
and −6x + 3y + 9.
7. Find the expression to be added with 5a − 3b + 2c to get a − 4b − 2c?
8. What should be subtracted from 2m + 8n + 10 to get −3m + 7n + 16?
9. Give an algebraic equation for the following statement:
“ The difference between the area and perimeter of a rectangle is 20”

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