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Mathematics 19 Online
OpenStudy (anonymous):

will medal and fan for help

OpenStudy (anonymous):

simplify the expression 55-4*5+12?

OpenStudy (studygurl14):

Use PEMDAS, aka order or operations, aka Please Excuse My Dear Aunt Sally

OpenStudy (studygurl14):

Parenthesis (none here) exponent (none here) multiplication and division (from left to right) addition and subtraction (from left to right)

OpenStudy (studygurl14):

What's your first step?

OpenStudy (anonymous):

@sangya21

TheSmartOne (thesmartone):

Why tag him when @StudyGurl14 is helping you?

OpenStudy (anonymous):

because i already messaged him and he said he can help me

OpenStudy (anonymous):

subtract @StudyGurl14

OpenStudy (anonymous):

@sangya21 this does not make sense to me

OpenStudy (anonymous):

dude its her, not him. and PEMDAS go letter by letter. then you will have M before S means multiply before subtract

OpenStudy (anonymous):

ok thanks so do 55-4 then that answer times 5 that answer +12 correct

OpenStudy (studygurl14):

No...remember, multiplying is before subtracting.

OpenStudy (anonymous):

oh ok

OpenStudy (studygurl14):

so you would do 4 times 5 first

OpenStudy (studygurl14):

Which is...?

OpenStudy (anonymous):

ok then what

OpenStudy (studygurl14):

And then you just add/subtract from left to right.

OpenStudy (anonymous):

so 55-20 then that answer +12 @StudyGurl14

OpenStudy (anonymous):

55 -20+12. addition then subtraction

OpenStudy (anonymous):

so the answer is 47?

OpenStudy (studygurl14):

right. :)

OpenStudy (anonymous):

thanks @StudyGurl14

OpenStudy (studygurl14):

You're welcome

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