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December 18, 2014

December 18, 2014

Posted by **Ashley** on Thursday, December 6, 2007 at 7:53pm.

5(9-3)+5x4-6=

5x6=30 +5=35x4=140-6=134

is this how it is supposed to be done???

Is this the correct method? Did I get the correct answer?

- Math -
**Mike**, Thursday, December 6, 2007 at 7:56pmlook at my new post bleow i explaned there i see were i told u wrong my bad

- Math -
**Emily**, Thursday, December 6, 2007 at 7:57pm5(9-3)+5*4-6=

45-15+5*4-6=

45-15+20-6=

30+20-6=

50-6=

44

I couldn't tell what you were trying to do, so I just solved it on my own. Is this sort of what you were going for?

- Math -
**PsyDAG**, Thursday, December 6, 2007 at 8:08pmAre there other parentheses? First combine within the parentheses, as you did with the first one. However, without other parentheses for example, it is impossible to tell if the 5x4 should be mulitplied before subtracting 6 or 5 should be multiplied after subtracting the 6 and getting -2.

In other words, without more information, I am not sure what you should do either.

I hope this helps. If not, repost with more information. Thanks for asking.

- Math -
**Damon**, Thursday, December 6, 2007 at 8:13pmThat worked fine Emily because of the distributive property when you multiply:

5 (9 - 3) = 5*9 - 5*3

= 45 - 13

= 30

BUT order of operations really says do the inside parens first:

5 (9 - 3) = 5 (6)

= 30

- Math -
**Emily**, Thursday, December 6, 2007 at 8:40pmOh yeah (oops!), so I figured the phrase Please Excuse My Dear Aunt Sally (parentheses, exponents, multiplication and division, and then addition and subtraction) the multiplication/division/addition/subtraction is done from right to left. I hope this solves the problem, PsyDAG.

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