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Mathematics 13 Online
OpenStudy (anonymous):

Evaluate.

OpenStudy (anonymous):

WILL MEDAL

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.

OpenStudy (anonymous):

6

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?

zepdrix (zepdrix):

\[\large\rm \frac{-8\color{orangered}{\left[6+3\right]}+4}{9-2(2+3)}\]

OpenStudy (anonymous):

9

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.

OpenStudy (anonymous):

\[\frac{ -8(9)+4 }{ 9-2(5) }\]

OpenStudy (anonymous):

@zepdrix

zepdrix (zepdrix):

\[\large\rm \frac{ \color{royalblue}{-8(9)}+4 }{ 9-\color{royalblue}{2(5)} }\]k good. Do your multiplication steps before addition.

OpenStudy (anonymous):

\[\frac{ -68 }{ -1 }\]

OpenStudy (anonymous):

Correct?

OpenStudy (anonymous):

@zepdrix

zepdrix (zepdrix):

yay good job \c:/

zepdrix (zepdrix):

It can simplify a tiny bit further, ya?

zepdrix (zepdrix):

negative divided by negative is positive. and dividing by 1 is trivial, we can suppress it.\[\large\rm \frac{-68}{-1}=\frac{68}{1}=68\]

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

is that the answer?

zepdrix (zepdrix):

yes

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