Algebra problem?

Question

Evaluate the expression. Write fractional answers in simplest form.
122 - [45 - (32 + 8) - 23]

This one has me stumped too.

Identify the property of real numbers illustrated by the statement.
2 + (3 + 8) = (2 + 3) + 8

Someone explained it to me, but I cant understand why we just reverse them all around?

Answer 1

Hi Advisor,

When you have brackets or parentheses, you take whatever's in front of the bracket or parentheses and move it to the inside ... for example, -(32+8) is the same as (-32-8). Do you get that part?

Here's step by step how you'd do the problem you have:

122 - [45 - (32 + 8) - 23] =

122 - [45 - 32 - 8 - 23] =

122 - 45 + 32 + 8 + 23 = {it's +32+8+23 because two negatives make a positive; i.e., -(-32) = +32}

140

Did that help? I hope so!

Answer 2

The order of operation should be performed this way :
First the operations in common braces, then those in flower braces and finally those in square brace. So here is the answer:
122 - [ 45 - (32+8) - 23]
= 122 - [ 45 - 40 - 23]
= 122 - [ - 18]
= 140.


and for 2 + ( 3+8) = (2+3 )+8
Its is associative property that is addition of natural numbers is associative. That is whether you add 3 to 8 and then the sum to 2 the answer is same as that obtained by adding 2 to 3 first then to 8.

Answer 3

While Solving the Algebra operaton We have to follow BODMAS order
Brackets,Powers or Roots,Division,Multiplication,Addition,Subraction

Step 1:
32+8 = 43
Step 2:
[45 -(43+23)]
step 3:
[45 -66]
step 4 :
122 -(-21)
step 5:
122+21
ans = 143

Answer 4

Hi,
this is a simple equation which can be solved by BODMAS rule,,hope u know that....
Answer = 122-[45-40-23]
= 122-[-18]
=140
so 140, is the answer...

And secondly u are talking about Additive Property of numbers..
this reversing is done,coz it is not true in all cases that:
first adding a+b and then adding c to their result OR first adding b+c and then adding a to their result

Answer 5

122-[45-(32+8)-23]
122-[45-40-23]
122-(5-23)
122-(-18).....negative times negative is equal to positive..so...
122+18=140...do u get it??
answer....140

for the second equation
2=(3+8)=(2+3)+8
2+11=5+8
13=13

Answer 6

122 -( 45 -40 -23) =
122 - (45 - 63)=
122 - ( -28) =
122 + 28 =
140

Answer 7

122-[45-40-23]=122-[5-23]
=122-(-18)
=122+18=140

Answer 8

140.
step by step it goes:
122- ( 45 -( 40) - 23)
122- (-18)
122+ 18
140.
Hope that helps

Answer 9

122-[45-(32+8)-32]
=122-[45-(40)-32]
=122-[45-40-32]
=122-[-18]
=122+18 (as -&- becoms +)
=140

Answer 10

Your too old to be doing Algebra.....get a tutor to help you with your homework!