Mathematics
20 Online
OpenStudy (anonymous):
Help !!!!!!!!!!!!!!!!!!!!!!!
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OpenStudy (anonymous):
OpenStudy (igreen):
PEMDAS
OpenStudy (igreen):
Do the parenthesis inside the bracket.
\(\sf (9 - 1) = ~ \! ?\)
OpenStudy (anonymous):
8
OpenStudy (igreen):
Yes, which gives us:
\(\sf \dfrac{8 \cdot 3 + 6}{-2[6 \div 2 - 8]}\)
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OpenStudy (igreen):
Now do the division in the parenthesis.
\(\sf 6 \div 2 = ~ \! ?\)
OpenStudy (anonymous):
3
OpenStudy (igreen):
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction.
OpenStudy (igreen):
Yes, so we have:
\(\sf \dfrac{8 \cdot 3 + 6}{-2[3 - 8]}\)
Subtract 3 - 8
OpenStudy (anonymous):
-5
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OpenStudy (igreen):
\(\sf \dfrac{8 \cdot 3 + 6}{-2[-5]}\)
Yep, now multiply -2 * -5
OpenStudy (anonymous):
10
OpenStudy (igreen):
\(\sf \dfrac{8 \cdot 3 + 6}{-10}\)
Now multiply 8 * 3.
OpenStudy (anonymous):
24
OpenStudy (igreen):
\(\sf \dfrac{24+6}{10}\)
Yes, now add it to 6 and divide by 10
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OpenStudy (igreen):
My bad, I accidentally wrote -10 above that.
OpenStudy (anonymous):
@iGreen i got 3
OpenStudy (igreen):
Yep, that's our answer.
OpenStudy (anonymous):
ok thank you can you help me with a couple more :)
OpenStudy (igreen):
Sure, just close this and open a new one.
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OpenStudy (anonymous):
ok