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OpenStudy (anonymous):
Add and subtract as directed. In your answer place a" ^" before the exponent. Example 2x^4 is 2x^4.)
a-7/3+ 5a-3/6-2a+5/4=_______
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OpenStudy (anonymous):
is it a^-7 or a-7
OpenStudy (anonymous):
it`s a-7
OpenStudy (radar):
is it \[a-7 \over 3\]or\[a-7\over 3+5a\]
OpenStudy (anonymous):
the first one
OpenStudy (anonymous):
16a-38/24 is the answer
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OpenStudy (anonymous):
first you'll make the denominator same
OpenStudy (anonymous):
to same them take LCM of all denominators
OpenStudy (anonymous):
you have to make all denominators 24
OpenStudy (anonymous):
so multiply the first term by 8
second term by 4
and third term by 6
OpenStudy (anonymous):
after denominator is same then its simple addition and subtraction
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OpenStudy (radar):
O.K.\[(a-7)/(3) + 5a - 3/6 -2a + 5/4=\] First combine simlar terms getting
(a-7)/3 +3a+3/4=
OpenStudy (radar):
the lowest common denominator LCD is 12 and the fractions now become
(4a-28)/12 +60a/12 +9/12=
(64a-19)/12 Assuming I have correctly copied it.
OpenStudy (radar):
I think I may have erred when converting to LCD try again
(4a-28)/12 +36a/12 + 9/12=
40a/12 - 19/12 =
10a/3 -19/12=
OpenStudy (anonymous):
Thank you @annas :) and thank you radar!
OpenStudy (anonymous):
no problem maria !
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