## anonymous 5 years ago Evaluate 23-7 divided by (1/3+1/4)

1. anonymous

the question is not clear. Use the equation toolbox and write down your question. You can type in the equation use the Equation button just underneath this area.

2. anonymous

$23-7\div(1/3+1/4)$

3. anonymous

thanks for telling me about that...I didn't know how to input my equation.

4. anonymous

np. so, first evaluate 1/3 +1/4

5. anonymous

i find the LCM of both of the them right? If so it's12

6. anonymous

right, so 1/3 = 4/12 and 1/4 = 3/12

7. anonymous

that's what I got. yay! okay now we add them it becomes (7/12)

8. anonymous

okay great! so what is 7 / 7 / 12?

9. anonymous

dividing right 7/7 = 1 and 7/12 = 1.71

10. anonymous

huh? no. it is $7 \div (7/12)$

11. anonymous

you have to be patient with me. I haven't done math in 8 years. :(

12. anonymous

$7\times12/7$ 7 and 7 cancel out. so the answer is 12.

13. anonymous

14. anonymous

oh...I see what I did wrong. duh!

15. anonymous

heh. $a \div b = a \times 1/b$

16. anonymous

So if I was going to do this problem..... (0.95-0.68)x6. I would do whats inside the parenthesis first and complete it before I move on to multiply. That rule goes for all with parenthesis......

17. anonymous

yes. you should always follow order of operations http://en.wikipedia.org/wiki/Order_of_operations#The_standard_order_of_operations

18. anonymous

PEMDAS Please, Excuse, My, Dear, Aunt, Sally~~~

19. anonymous

P - Parenthesis, E= exponents, M = Multiplication, D= division, A = addition, S = subtraction ^_^ and + always start computing from left to right

20. anonymous

also, BODMAS.

21. anonymous

it's weird though, but I don't have an aunt called sally o_o lol, but anyhow, hope this sets things right ^_^

22. anonymous

LOL! what does that stand for?

23. anonymous

yeah. I am still learning how this all works again. We are working on equations and decimals, and word problems. I am having such a hard time with this stuff.

24. anonymous

nah, you'll get through with it in no time ^_^

25. anonymous

B Brackets first O Orders (ie Powers and Square Roots, etc.) DM Division and Multiplication (left-to-right) AS Addition and Subtraction (left-to-right)

26. anonymous

lol, my dear aunt sally statement is better :D

27. anonymous

I always used aunt sally

28. anonymous

oh well, I was taught bodmas. its all the same.

29. anonymous

likewise LOL, I know dhat ^_^

30. anonymous

sigh, I miss school lol

31. anonymous

lol, yeah. I would be so smart at it now!

32. anonymous

yep! >_< and I'd get 100s and As all over the place

33. anonymous

true. :)

34. anonymous

^_^