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本做題蛆給您簡單算一下。您老改改卷，看看浪友的文化有沒達到小學程度？
1. 7+2-6 = 3
2. 9+9 = 18
3. 66+44 = 110
4. 13-8 = 5
14. 374518 ≈ 3.745×10^5 (or 3745×100)
15. 13/16/2 = 0.40625
16. (a)6+2/3 = 20/3; (b)4+2/3 = 14/3; Thus 20/3+14/3 = 34/3 = 11+1/3
17. 3/4-1/3 = 9/12-4/12 = 5/12
27. => 10-8+12x=0
=> 2+12x=0
=> 12x=-2
=> x=-1/6
28. ..= (16+16)/(-6+4 )= 32/-2 = -16
29. ..= s^2+2s+1
30. ..= -2×9-2/3 = -18-2/3 = -54/3-2/3 = -56/3
更多...1. 7+2-6 = 3
2. 9+9 = 18
3. 66+44 = 110
4. 13-8 = 5
14. 374518 ≈ 3.745×10^5 (or 3745×100)
15. 13/16/2 = 0.40625
16. (a)6+2/3 = 20/3; (b)4+2/3 = 14/3; Thus 20/3+14/3 = 34/3 = 11+1/3
17. 3/4-1/3 = 9/12-4/12 = 5/12
27. => 10-8+12x=0
=> 2+12x=0
=> 12x=-2
=> x=-1/6
28. ..= (16+16)/(-6+4 )= 32/-2 = -16
29. ..= s^2+2s+1
30. ..= -2×9-2/3 = -18-2/3 = -54/3-2/3 = -56/3
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25-11-15