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Mathematics 7 Online
OpenStudy (anonymous):

Simplify 13 + 2 - 5 - 15

OpenStudy (texaschic101):

okay....step by step whats 13 + 2 ?

OpenStudy (texaschic101):

I will continue when you can answer that question

OpenStudy (anonymous):

Dont give direct answers now kids, let Texas handle it

OpenStudy (texaschic101):

well..he left. I guess he just wanted the answer

OpenStudy (anonymous):

Yup.

OpenStudy (anonymous):

WEll hey you got a medal! :P

OpenStudy (texaschic101):

lol...true. He probably was just having trouble with subtracting a negative from a positive

OpenStudy (anonymous):

@texaschic101 people need to read the CoC more often :P

OpenStudy (texaschic101):

yep..they do

OpenStudy (anonymous):

first u add then u subtract

OpenStudy (anonymous):

u can use DMAS rule D=divide M=multiply A=add S=subtract

OpenStudy (anonymous):

yea that i swhat i ment to say

OpenStudy (texaschic101):

basically, all you have to do is start at the right side and work your way left...because with DMAS, when doing addition/subtraction, thats exactly what you do. You do not have to do addition before subtraction...you just move from left to right and do whichever (addition or subtraction) comes first and just keep doing that in the order they occur.

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