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Mathematics
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OpenStudy (anonymous):
Evaluate.
10 years ago
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OpenStudy (anonymous):
WILL MEDAL
10 years ago
zepdrix (zepdrix):
\[\large\rm \frac{-8\left[\color{orangered}{(12-6)}+3\right]+4}{9-2(2+3)}\]We prioritize brackets or parenthesis highest,
so let's start with these brackets within brackets.
10 years ago
OpenStudy (anonymous):
6
10 years ago
zepdrix (zepdrix):
\[\large\rm \frac{-8\left[\color{orangered}{6}+3\right]+4}{9-2(2+3)}\]k what next?
We should probably stay in this room, this set of brackets, ya?
10 years ago
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zepdrix (zepdrix):
\[\large\rm \frac{-8\color{orangered}{\left[6+3\right]}+4}{9-2(2+3)}\]
10 years ago
OpenStudy (anonymous):
9
10 years ago
zepdrix (zepdrix):
\[\large\rm \frac{-8\color{orangered}{(9)}+4}{9-2(2+3)}\]k good.
Finish the numerator by multiplying before adding.
Then we move onto the denominator.
10 years ago
OpenStudy (anonymous):
\[\frac{ -8(9)+4 }{ 9-2(5) }\]
10 years ago
OpenStudy (anonymous):
@zepdrix
10 years ago
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zepdrix (zepdrix):
\[\large\rm \frac{ \color{royalblue}{-8(9)}+4 }{ 9-\color{royalblue}{2(5)} }\]k good.
Do your multiplication steps before addition.
10 years ago
OpenStudy (anonymous):
\[\frac{ -68 }{ -1 }\]
10 years ago
OpenStudy (anonymous):
Correct?
10 years ago
OpenStudy (anonymous):
@zepdrix
10 years ago
zepdrix (zepdrix):
yay good job \c:/
10 years ago
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zepdrix (zepdrix):
It can simplify a tiny bit further, ya?
10 years ago
zepdrix (zepdrix):
negative divided by negative is positive.
and dividing by 1 is trivial, we can suppress it.\[\large\rm \frac{-68}{-1}=\frac{68}{1}=68\]
10 years ago
OpenStudy (anonymous):
ok
10 years ago
OpenStudy (anonymous):
is that the answer?
10 years ago
zepdrix (zepdrix):
yes
10 years ago
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