## anonymous one year ago Evaluate 32 + (7 − 2) ⋅ 4 − 6 over 3. 24 54 27 28

1. anonymous

@misssunshinexxoxo

2. chrisplusian

3. chrisplusian

Parentheses so.... 7-2 =5

4. anonymous

32+5

5. chrisplusian

Then you have 32+5*6*4-6 over 3

6. chrisplusian

You can look at the numerator as being in parentheses and then divided by the bottom

7. anonymous

37 24

8. chrisplusian

Next you have to follow from left to right in the numerator... so you do multiplication first. Multiplying 5*6 you get 30

9. anonymous

30*4=120

10. chrisplusian

Then multiplying 30 by 4 you get 120

11. anonymous

2

12. chrisplusian

Then you do addition left to right

13. anonymous

what do you mean

14. anonymous

i suck at math really bad

15. chrisplusian

Ok for clarification....

16. anonymous

ok

17. anonymous

what number would we do left to right?

18. chrisplusian

$\frac{ 32+(7-2)*4-6 }{ 3 }$

19. chrisplusian

20. anonymous

yes

21. chrisplusian

I made a mistake when I started cause I added something that didn;t belong there I aplologize

22. anonymous

thats fine :)

23. chrisplusian

But if the problem I just posted is correct you don't have the answer listed because it would be a decimal. Can you check to be sure that what I posted is actually your problem?

24. anonymous

ok heres my problem

25. anonymous

|dw:1443061261463:dw|

26. chrisplusian

OK thats different... lets start it then

27. anonymous

ok

28. anonymous

thanks for sticking around

29. chrisplusian

first is parentheses...$3^2 + (5)*4 -\frac{ 6 }{ 3 }$

30. anonymous

20

31. chrisplusian

Next exponents....$9 + 5*4-\frac{ 6 }{ 3 }$

32. anonymous

29

33. chrisplusian

Then multiplication...$9+20-\frac{ 6 }{ 3 }$

34. anonymous

how do you multiply from a fraction?

35. chrisplusian

Then addition left to right....$29-\frac{ 6 }{ 3 }$

36. anonymous

27?

37. chrisplusian

last we need to subtract, but our first number is not a fraction..... how do we change it? To add or subtract fractions we must have a common denominator.... in this case that denominator is 3..... we can multiply the first number 29 by $\frac{ 3 }{ 3 }$ because this is just the number one. Multiplying by one does not change the value of the number but it does change what it looks like...$\frac{ 3 }{ 3 }*29 - \frac{ 6 }{ 3 } = \frac{ 87 }{ 3 }-\frac{ 6 }{ 3 }$

38. chrisplusian

$\frac{ 87 }{ 3 }-\frac{ 6 }{ 3 } = \frac{ 87-6 }{ 3 }$

39. anonymous

that would be 28

40. chrisplusian

$=\frac{ 81 }{ 3 }=27$

41. chrisplusian

Sorry long winded but if you have to look back I want you to understand where it all came from

42. anonymous

i had it right the first time lol. yes i most definitely will go back and look.

43. anonymous

You're a awesome at exemplifying thank you so much!

44. chrisplusian

Its really a matter of looking at the whole problem and deciding what takes precedence.... parentheses, then if there aren't any whats next... exponents... then multiplication or division (whichever comes first left to right meaning multiplication doesn't come before division unless it shows up first left to right), then addition or subtraction (whichever comes first left to right). and your done :) good luck

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