Mathematics
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OpenStudy (anonymous):
Solve the equation below for x.
4x-5y=20
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OpenStudy (saifoo.khan):
What basically you have to do is to bring x on one side of the equation. Agree?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
oh i got it
OpenStudy (anonymous):
wait but i still need a little help so hold on a minute
OpenStudy (anonymous):
after y = -4 - 4x/5 what next
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OpenStudy (anonymous):
wait no i am solving for x not y
OpenStudy (anonymous):
i guess first i have to find y right
OpenStudy (anonymous):
hi
OpenStudy (anonymous):
hi
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OpenStudy (anonymous):
it is not very useful
OpenStudy (anonymous):
i need help
OpenStudy (anonymous):
i think you cant solve an equation with two unknowns
u will need as many linear equations as possible
OpenStudy (anonymous):
ok
the answer choices r
OpenStudy (anonymous):
F. x = 5/4y+5
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OpenStudy (anonymous):
Gx = 4/5y+25
OpenStudy (anonymous):
sorry that was G. = to
OpenStudy (anonymous):
sorry again that was G. x = to
OpenStudy (anonymous):
ok i get it now we are looking for x so why make it more complicated what you do is
OpenStudy (anonymous):
4x - 5y=20 so from there you add 5 to both sides
+5y +5y then you do that and that equals
4x = 20 + 5y
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OpenStudy (anonymous):
then from there you divide 4 on all 3 sides
4x = 20 + 5
- - -
4 4 4
OpenStudy (anonymous):
4 cancels out and you are left with x = 20/4 + 5/4 then you divide 20/4 that equals
5 and then you have
OpenStudy (anonymous):
4x = 5 + 5/4 and that is ur answer actually it is 4x=5/4+5
OpenStudy (anonymous):
sorry it equals x= 5/4y + 5
OpenStudy (anonymous):
and that is your answer
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OpenStudy (anonymous):
any questions r comments
OpenStudy (anonymous):
so the answer is F. x = 5/4y+5
OpenStudy (anonymous):
y dont u accept messages @skullpatrol