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the question was, rearrange to make y the subject
d = 7y - 4
I ended up with
d = 7y - 4
d + 4 = 7y - 4 + 4
d + 4/7 = 7y/7
d + 4/7 = y
y = d+4/7
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OpenStudy (anonymous):
y=(d+4)/7
OpenStudy (anonymous):
up to here its correct
d + 4 = 7y - 4 + 4
OpenStudy (shelld93):
are the brackets needed ? How will I know if they are or not ?
What did I do wrong ?
OpenStudy (anonymous):
but for the line d + 4/7 = 7y/7
correct form is
(d+4)/7 = 7y/7
OpenStudy (anonymous):
yup the brackets are neede when dividing or multiplying this way..
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OpenStudy (shelld93):
okay so brackets for division and multiplication and i dont understand your other reply.
OpenStudy (shelld93):
it looks like text is missing
OpenStudy (anonymous):
hope its easy for you now..
OpenStudy (anonymous):
which statement..
OpenStudy (shelld93):
but for the line d + 4/7 = 7y/7
correct form is
(d+4)/7 = 7y/7
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OpenStudy (imstuck):
The answer is d + 4/7 = y.
OpenStudy (anonymous):
i meant to say that
d + 4/7 = 7y/7 is incorrect
and
(d+4)/7 = 7y/7 is correct form
OpenStudy (shelld93):
okay so i went wrong because i didnt have brackets ? thats all that is wrong with my answer ?
OpenStudy (perl):
looks like, use parentheses when in doubt :P
OpenStudy (anonymous):
@ShellD93
yup
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