Question

can someone help me!!!!!!! 5x2+3[2(5-3)+4(4+2)-3] can someone please show me step by step how this is worked out??? thanks in advance

Answer 1

is the problem to evaluate the expression?

Answer 2

yes

Answer 3

we have to apply order of operations for this problem. Do you know the order?

Answer 4

no sir i really don't

Answer 5

Order of Operations
1) Take care of the operations inside the grouping symbols
2) Take care of your exponents
3) Perform mult/div as it occurs left to right
4) Perform add/sub as it occurs left to right

Answer 6

There is an acronym (PEMDAS) that shows the order of operations.
When simplifying and evaluating expressions.
Do it in the order of
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Answer 7

oh ok thanks you all so much...let me try and work it now

Answer 8

ok what about the brackets

Answer 9

Those are grouping symbols

Answer 10

they act as parenthesis. You do the inner most parenthesis first and then the outer ones afterward.

Answer 11

ok thanks again you all...feeling really slow right now

Answer 12

By the way be careful with PEMDAS
This does not mean that multiplication comes before division
like for example
To do the following we would actually do the division first since it comes first:
\[6\div2\times4\]
\[3 \times 4\]
12

Answer 13

You would do the multiplication/division depending on what came first reading from left to right

Answer 14

oh cool thanks for the heads up!!!!

Answer 15

both u all deserves a medal how do give u both one

Answer 16

Sadly you can only give one medal out per question.

Answer 17

wow dang!!!

Answer 18

Why m i here then?

Answer 19

My feelings won't be hurt. I really don't care too much about them.

Answer 20

I'm just here to help :)

Answer 21

awwwww thanks so much!!!!! i have gotten lost now or should i say struck

Answer 22

Can you show me/us what you have so far?

Answer 23

5x2+3[2(2)+4(6)-3]

Answer 24

Ok good so far! :)

Answer 25

\[\large{5x^2+3[2(2)+4(6)-3]}\]

Answer 26

Now you have the [ ]
And you have multiplication and addition and subtraction inside those [ ]
what comes first according to the order of operations we have above?

Answer 27

@mathslover I think she meant that x to be multiplication am I right @connie2hott ?

Answer 28

yes u right mult

Answer 29

5x 2+3 [4+24-3]

Answer 30

Oh yes absolutely right since this is an expression and not an equation and hence according to the law of "guessing" we can absolutely say that x is multiplication and not a variable here... well this was all nonsence ... you may continue... sorry to interrupt but i just thought that it will be easy for you with latex :P

\[\large{5*2 + 3[4+24-3]}\]

Answer 31

Yep. Then we inside the [ ] we still have some operations to perform
The addition and subtraction.
We are looking at the 4+24-3 right now
And this equals?

Answer 32

Thanks Mathlover toooooo

Answer 33

31

Answer 34

No thanks....at this instant concentrate to myin. solution

Answer 35

I think you did 28+3 instead of 28-3

Answer 36

25kmsl

Answer 37

That looks better
so that gives us the following expression as of now:
\[5 \times 2+3[25]\]

Answer 38

So we have multiplication and addition left
According to the order of operations that is some way all the way up there
it tells us to do what?

Answer 39

85

Answer 40

Yes! Totally right! :)

Answer 41

thanks so much!!!!!!!!!!!!! u all help me so much but i really want to thank you myininaya for sticking in there with me <3 <3 means a lot