Solving More Equations?

2008-04-04 5:29 pm
1. a - 3 = - 2

2. y + 4 = - 3

3. 4x = - 3

4. - 2c = 0

5. m divided by seven equals two

6. p divided by negative two equals four

7. - 2b + 6 = 11

8. 4c - 7 = 13

9. 2y - 5y - 1 = - 10

10. 6z - 2z = 7 + 1

11. -3d = 2d + 10

12. 2a + 3 = a - 2

13. x divided by four plus five equals seven

14. y divided by negative three minus one equals two

15. - (2z - 4) = 7

回答 (4)

2008-04-04 7:16 pm
✔ 最佳答案
15 questions ????
naughty , naughty !!
2008-04-05 12:35 am
This looks like ALL of your homework. We will not be doing you any favours if we do it for you: you will learn nothing. I suggest that you post 3 of them, and then try the rest OYO. Then ask if they`re correct.
2008-04-05 12:32 am
You really should do these by yourself, if you start avoiding learning this early, you are going to have a lot more problems later on.
2008-04-05 12:41 am
1)
a - 3 = -2
a = -2 + 3
a = 1

2)
y + 4 = -3
y = -3 - 4
y = -7

3)
4x = -3
x = -3/4 (0.75)

4)
-2c = 0
c = 0/-2
c = 0

5)
m/7 = 2
m = 7(2)
m = 14

6)
p/-2 = 4
p = -2(4)
p = -8

7)
-2b + 6 = 11
-2b = 11 - 6
-2b = 5
b = 5/-2
b = -2 1/2 (-2.5)

8)
4c - 7 = 13
4c = 13 + 7
4c = 20
c = 20/4
c = 5

9)
2y - 5y - 1 = -10
-3y = -10 + 1
-3y = -9
y = -9/-3
y = 9/3
y = 3

10)
6z - 2z = 7 + 1
4z = 8
z = 8/4
z = 2

11)
-3d = 2d + 10
-3b - 2d = 10
-5d = 10
d = 10/-5
d = -2

12)
2a + 3 = a - 2
2a - a = -3 - 2
a = -5

13)
x/4 + 5 = 7
x/4 = 7 - 5
x = 4(2)
x = 8

14)
y/-3 - 1 = 2
y/-3 = 2 + 1
y = -3(3)
y = -9

15)
-(2z - 4) = 7
-2z + 4 = 7
-2z = 7 - 4
-2z = 3
z = 3/-2
z = -1 1/2 (-1.5)


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