To solve the equation r divided by four minus two-ninths equals four-sixths for r, what two operations must be performed, and in which order?
Add then multiply.
Add then divide.
Subtract then multiply.
Subtract then divide.
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OpenStudy (anonymous):
subtract then multiply
OpenStudy (anonymous):
:)
OpenStudy (anonymous):
that is correct
OpenStudy (anonymous):
no that is wrong
OpenStudy (anonymous):
How?
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OpenStudy (anonymous):
you have to switch it around it should be add then divide
OpenStudy (anonymous):
because you should all ways turn it around then its easier
OpenStudy (math&ing001):
Actually @iceicebaby you substract first to get the 'r' in one side then you multiply.
OpenStudy (anonymous):
Correct so I was right
OpenStudy (math&ing001):
Yep !
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OpenStudy (anonymous):
It is subtract then multiply
OpenStudy (anonymous):
that is wrong because i put that on my test and got it wrong
OpenStudy (math&ing001):
r/4 - 2/9 = 4/6
r/4 - 2/9 + 2/9 = 4/6 + 2/9
r/4 = 8/9
r/4 * 4 = 8/9 * 4
r = 32/9
They expect you to put add then multiply (option 1)
But really those notions are just the same because multiplying by 1/4 is equivalent to dividing by 4.