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OpenStudy (anonymous):
is this right?
15/22t + 8/4t
= 15/22t + 2/4t
= 37/22t
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jhonyy9 (jhonyy9):
(15t+22(2t)
----------- = (15t+44t)/22 = 59t/22
22
OpenStudy (anonymous):
15/22t + 8/4t
Are t located in denominator?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
22t and 4t are the denominators
jhonyy9 (jhonyy9):
so from 8/4t how you have got 2/4t ?
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OpenStudy (anonymous):
i divided 8/4t by 2
jhonyy9 (jhonyy9):
and 8 divided by 2 is 2 ?
OpenStudy (anonymous):
oh
jhonyy9 (jhonyy9):
so 8/4t you can simplifie by 4 and will get 2/t
OpenStudy (anonymous):
Common denominator is 22t:
(15 + 2 * 22)/ 22t
= 59/ 22t
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jhonyy9 (jhonyy9):
fave is ok ?
jhonyy9 (jhonyy9):
is it ok ?
OpenStudy (anonymous):
what?
jhonyy9 (jhonyy9):
this all
OpenStudy (anonymous):
yes
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OpenStudy (anonymous):
Is this correct?
z^2-81/z divide by z+9/z+5
I got z^2-45/z as the answer
jhonyy9 (jhonyy9):
ok than this is ok so you can give medal for ... to ...
jhonyy9 (jhonyy9):
(z-9)(z+9) z+5 (z-9)(z+5)
---------- * ------ = -----------
z z+9 z
OpenStudy (anonymous):
z^2-81/z divide by z+9/z+5
(z^2-81)/z * (z +5)/ (z +9)
(z -9)(z+9)/z * (z +5)/ (z +9)
=> ( z -9 ) * (z + 5) / z
jhonyy9 (jhonyy9):
z^2 -4z -45
-----------
z
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