Perform the indicated operations:
1. (-5) + (-6)
2. (+1) + (-10)
3. (-3) + (+8)
4. (+5) + (+7)
5. (-5) + (+3)
6. (0) + (-3)
7. (-7) - (-3)
8. (+2) - (-9)
9. (-4) - (+2)
10. (+4) - (-7)
11. 0 - (+3)
12. 0 - (-20
13. (-9)(-2)
14. (+4)(+6)
15. (-7)(+3)
16. (+5)(-8)
17. (+6)(0)
18. (0)(-4)
19. 
20. 
21. 
22. 
23. 
24. 
25. (+2) + (-1) + (+10)
26. (-7) + (+2) + (+9) + (-8)
27. (-9) + (-3) + (+3) + (-8) + (+4)
28. (+8 + (-2) + (-6) + (+7) + (-6) + (+9)
29. (-4) - (+5) - (-4)
30. (+3) - (-5) - (-6) - (+5)
31. (-7) - (-4) - (+6) - (+4) - (-5)
32. (-8) - (+7) - (+3) - (-7) - (-8) - (-2)
33. (+5) + (-2) - (+7)
34. (-3) - (-8) - (+3) + (-9)
35. (-2) - (+1) - (-10) + (+12) + (-9)
36. (-1) - (-11) + (+2) - (-10) + (+8)
37. (+3)(-5)(+3)
38. (-1)(+2)(+2)(-1)
39. (+2)(-4)(-6)(-3)(+2)
40. (-1)(+3)(-2)(-4)(+5)(-1)
Do as indicated. Express the results using positive exponents.
1. (105)(105)
2. 106 + 102
3. (102)4
4. (10-2) (10-3)
5. 103
105
6. (10-3)3
7. 105 + 10-2
8. (10-2)-3
9. (104)(10-1)
10. 
11. (100)(10-4)
12. 
13. (100)-2
14. 10-3
15. 
16. 
17. 
18. 
19. 
20. 
21. 
22. 
23. 
24.
Solve each equation.
1. 3x = 4
2. 
3. x - 5 = 12
4. x + 1 = 9
5. 2x + 10 = 10
6. 4x = 28
7. 2x - 2 = 33
8. 
9. 172 - 43x = 43
10. 9x ¸ 7 = 4
11. 6y - 24 = 0
12. 3y ¸ 15 = 75
13. 
14. 6x = x - 15
15. 
16. 9y = 67.5
17. 8x - 4 = 36
18. 
19. 2x + 22 = 75
20. 9x ¸ 10 = x - 26
21. 4x + 9 = 7x - 18
22. 2x - 4 = 3x ¸ 7
23. -2x + 5 = 5x - 11
24. 5x ¸ 3 = 2x - 18
25. 3x + 5 = 5x - 11
26. -5x ¸ 12 = 12x - 5
27. 13x + 2 = 20x - 5
28. 5x ¸ 3 = -9x - 39
29. -4x + 2 = -10x - 20
30. 9x ¸ 3 = 6x ¸ 8
31. 3x + (2x - 7) = 8
32. 11 - (x ¸ 12) = 100
33. 7x - (13 - 2x) = 5
34. 20 (7x - 2) = 240
35. -3x + 5 (x - 6) = 12
36. 3 (x + 117) = 201
37. 5 (2x - 1) = 8 (x + 3)
38. 3 (x + 4) = 8 - 3 (x - 2)
39. -2 (3x - 2) = 3x - 2 (5x + 1)
40. 