How to simplify and evaluate expressions containing parentheses?

V

vanessa

New member
Hi! Thanks for trying to help, I really appreciate it!

1. -7x - 3 (9-7x) if x= -1

2. 6(3x - 1) - 10x if x= 7

3. 7- 4x + 2 (5x + 8) if x= -2

4. 7x - 4 (6 - x) + 12 if x= 6

5. -3(4x - 1) + 9x + 8x if x= -9

6. 10 - (2y - 6) - y if y= 8

7. 4 (3 + 7y) + 6 (2 - y) if y= 2

8. 9 (2y - 4) - 2 (7y - 12) if y= -9

9. 5 (-3y - 1) - (6 - 5y) if y= -6

10. 2 (7 + 6y) + 15 ( -1 + y) if y= 1

11. (-9y + 5) - 8 (-y - 2) if y= -3

12. -(5y - 6) + 4 (3 + 5y) if y= 2
 
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