anonymous
  • anonymous
and again
Pre-Algebra
schrodinger
  • schrodinger
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anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
Why don't u learn how to do them instead of asking for answers???
phi
  • phi
This is the same problem as before. Just different numbers.

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anonymous
  • anonymous
Well if you knew me good enough you would now that I don't learn real easy. It isn't that I am choosing not to learn I just don't get how to do it.
skullpatrol
  • skullpatrol
|dw:1356563774476:dw|
skullpatrol
  • skullpatrol
Multiply both sides by 7.
anonymous
  • anonymous
-35 and -7?
skullpatrol
  • skullpatrol
|dw:1356563975056:dw|
anonymous
  • anonymous
Am I right?
skullpatrol
  • skullpatrol
Add 5 to both sides.
anonymous
  • anonymous
-30 and -2?
skullpatrol
  • skullpatrol
|dw:1356564176650:dw|
phi
  • phi
no, when you multiply 7 times (z-5)/7 \[ \frac{7}{1}\cdot \frac{(z-5)}{7} \] you get \[\frac{7(z-5)}{7} \] or \[ \frac{7}{7}\cdot \frac{(z-5)}{1} \] 7/7 is 1 and (z-5)/1 is (z-5) multiplying by the 7 makes the denominator "go away"
anonymous
  • anonymous
OK????
phi
  • phi
see skull's first post
anonymous
  • anonymous
what about it?
phi
  • phi
you do not get -35 and -7? you get z-5= -7
anonymous
  • anonymous
ok. but never mind
skullpatrol
  • skullpatrol
The answer is {-2} because -2 is the only number that will make z = -2 a true statement.
skullpatrol
  • skullpatrol
-2 = -2
anonymous
  • anonymous
ok but the only reason I am asking these questions is because I dont get how to do them @Harkirat
anonymous
  • anonymous
@chevygirl Well ask your teacher to explain,in detail, how to solve such sums....u cannot go through life asking others to solve them for you......being able to do themselves will boost your confidence...
anonymous
  • anonymous
well if my teachers were here i would ask them but they arent here so I cant AND i got put in a different class because i got behind because i am not good at math
skullpatrol
  • skullpatrol
|dw:1356564567196:dw|
anonymous
  • anonymous
ok. i will try to REMEMBER this
skullpatrol
  • skullpatrol
Would you like me to explain how I solved the original equation?
anonymous
  • anonymous
um no thanks cause i have to do another test
skullpatrol
  • skullpatrol
Is it a math test?
anonymous
  • anonymous
yeah
skullpatrol
  • skullpatrol
If I explain this one you can use the method on most of your other questions.
anonymous
  • anonymous
yeah but i dont know if it is these type of questions or not
skullpatrol
  • skullpatrol
There are a lot of these types of questions in math.
skullpatrol
  • skullpatrol
What grade level?
anonymous
  • anonymous
7
skullpatrol
  • skullpatrol
Do you know what an inverse operation is?
anonymous
  • anonymous
yeah
skullpatrol
  • skullpatrol
inverse operations: Operations that "undo" each other for example multiplication and division.
skullpatrol
  • skullpatrol
If the side containing the variable involves a certain order of operations, apply the inverse operations in the opposite order.

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