Pre-Algebra
7 Online
OpenStudy (anonymous):
Which line shows the first error in the solution
5(x-)=15 (1)
5x-25=15
5x-25=15
5x=-10
5x/5=-10/5
x=-2
a.line 2
b.line 3
c.line 4
d.line 5
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OpenStudy (pawanyadav):
Error... I think question is incomplete.
OpenStudy (anonymous):
what do you mean
OpenStudy (pawanyadav):
There should be 5(x-5)
OpenStudy (anonymous):
you are right my bad
OpenStudy (pawanyadav):
What do you think about answer....
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OpenStudy (anonymous):
i really don't know we never done this in class
OpenStudy (pawanyadav):
OK let's start
OpenStudy (anonymous):
ok what do we do first
OpenStudy (pawanyadav):
As by distribution
5*x-5*5=15
OpenStudy (pawanyadav):
So 5x-25=15
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OpenStudy (anonymous):
yeah 5x5x5=15
OpenStudy (pawanyadav):
What
OpenStudy (anonymous):
sorry what were you saying
OpenStudy (pawanyadav):
Do you understand that
5x-25=15
OpenStudy (anonymous):
no
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OpenStudy (pawanyadav):
What is 5(x-5)
Try using distribution...
OpenStudy (anonymous):
i don' get it
OpenStudy (pawanyadav):
5(x-5)=5(x)-5(5) =5x-25
So you have in question
5(x-5)=15 means
5x-25=15
Now you to remove (-25) from LHS what will you do
OpenStudy (pawanyadav):
I think we have to add 25 both side..
OpenStudy (anonymous):
ok you lost can you break it down slower so i can understand
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OpenStudy (pawanyadav):
Don't you understand
5(x-5)=5x-25
OpenStudy (anonymous):
no i don't understand i'm sorry
OpenStudy (pawanyadav):
5(x-5) means first multiply 5 with x minus 5 multiply with 5
OpenStudy (pawanyadav):
Do you sense it now
OpenStudy (pawanyadav):
Sorry I think @pooja195
Can understand you more easily.
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OpenStudy (anonymous):
i got 20
OpenStudy (pawanyadav):
No,