Ask your own question, for FREE!
Mathematics 14 Online
OpenStudy (anonymous):

verlieren

OpenStudy (anonymous):

first question

OpenStudy (welshfella):

This is a n exercise in the order of operations PEMDAS ParenthesesExponenetsMusltipyDivideAddSubtract - perform the calculations in this order For example the numerator is 8 *3 + 6 - multipiy is done first = 24 + 6 = 30

OpenStudy (welshfella):

where you have parenthese within parenthese work out the innermost first

OpenStudy (anonymous):

Follow the rules of PEMDAS. In the numerator, you need to multiply first, so it'd be 24 + 6 or 30. In the denominator, you need to focus on the innermost brackets first. -2(6/2-(9-1)) -2(6/2-8) You currently have 30/-2(6/2-8). What should you do from there?

OpenStudy (anonymous):

okk...... so i got the answer 24....

OpenStudy (welshfella):

please show your work

OpenStudy (welshfella):

- how did you work out the denominator -2[6 / 2 -(9-1)]

OpenStudy (anonymous):

my work? my work is on paper....... wait.... is the answer 30

OpenStudy (anonymous):

Type it out here, please. The answer shouldn't be 30.

OpenStudy (welshfella):

no work out the denomianar the 9-1 in the inner bracket is done first to give -2[ 6/2 - 8]

OpenStudy (anonymous):

im so confused. can you show me how to solve it and i will analyze how you did it. ill print it and it will help me on the rest of my questions, because itll show me how to solve it

OpenStudy (welshfella):

you have a divide and subtraction in the parenthese - which comes first the divide or the subtract?

OpenStudy (anonymous):

divide

OpenStudy (welshfella):

the divide is done first so we have -2[3 - 8] Now work out the 3-8 next (as ist in the parentheses) then do the multiply by -2.

OpenStudy (welshfella):

do you follow that ok?

OpenStudy (anonymous):

uhm.....ok.. yes

OpenStudy (welshfella):

when you have worked that out the final operation is to divide it into the numerator (30)

OpenStudy (anonymous):

ok

OpenStudy (welshfella):

what is 3 - 8?

OpenStudy (anonymous):

-5

OpenStudy (welshfella):

right now -2*-5 = ?

OpenStudy (anonymous):

10

OpenStudy (welshfella):

ok now finnal its 30 / 10 = 3

OpenStudy (anonymous):

thats the answer?

OpenStudy (anonymous):

what.... 3?

OpenStudy (anonymous):

@welshfella

OpenStudy (welshfella):

3 is the answer

OpenStudy (anonymous):

oh, thanks

OpenStudy (welshfella):

we workesd out the numerator to be 30 and denominator to be 10 so the fraction becomes 30/10 = 3

OpenStudy (welshfella):

yw

OpenStudy (welshfella):

Commit PEMDAS to memory and you'll have no problems with this type of question.

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!