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March 30, 2015

March 30, 2015

Posted by **Deb** on Saturday, January 10, 2009 at 1:03pm.

17-19 ÷ (5)(5) -30

- Math 115 25 -
**drwls**, Saturday, January 10, 2009 at 1:06pmShow parentheses

- Math 115 25 -
**Deb**, Saturday, January 10, 2009 at 1:38pmwhat do u mean

this is what i come up with:

-2 ÷ -5 = .4

- Math 115 25 -
**drwls**, Saturday, January 10, 2009 at 2:43pmIt could also be

(-2/25) -30 = - 32 2/5

or

17 - (19/25) -30 = -13 19/25

or a lot of other answers.

What you calculated was

(17-19)÷ [(5)(5) -30]= -0.4

If you don't understand the importance of when and how to use parentheses, you are going to have a lot of difficulty with algebra

- Math 115 25 -
**Deb**, Saturday, January 10, 2009 at 4:28pmthe way the problem was originally written is the way it is presented to me.

The only parentheses are the ones in the denominator around the 5's

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