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8M: 2-1 & 2-2 QC (1-step equations)
供稿人: Maynard
(原作者: Maccoux)

1.  Solve:      x - 9 = -2

x =

2. Solve:    3x = -12

x =

3. Solve:   -12 = -2x

x =

4. Solve: x - (-2) = 5

x =

5. Solve:   5 = -3 + x

x =

6. Solve:  -12x = -6

x =
*Be sure your answer is reduced!

7.  Solve:

x =
3
x
= 5

8. Solve:

x =
-4
x
= -1

9. Solve:

x - 9 = -8
x =
x=

10. Solve:  3x = -8 

*If negative, put negative
sign in numerator.

11. Solve:   9x = -81

x =
12.  Earth takes 365 days to orbit the sun.  Mars       takes 687 days.  Write and solve an equation       to find how many more days, d, Mars takes       than Earth to orbit the Sun.
322 more days
1.88 more days
1052 more days
422 more days
13.  Earth takes 365 days to orbit the sun.  Mars       takes 687 days.  Write and solve an equation       to find how many more days, d, Mars takes       than Earth to orbit the Sun.  Which equation        represents this situation?
d - 365 = 687
365d = 687
d + 365 = 687
d ÷ 365 = 687
14.  The perimeter of a square is 24 inches.  Which
       equation below represents this?  Let s be the 
       length of one side of the square.
s - 4 = 24
4s = 24
4 + s = 24
24s = 4
14.  The perimeter of a square is 24 inches. Let s 
       be the length of one side of the square.  Find
       the length of a side of the square.
6 inches
20 inches
28 inches
8 inches
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