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Anastasy [175]
3 years ago
9

Lance wants to find the total length of 3 boards.He uses the expression 3 1/2+( 2+4 1/2 how can lance rewrite the expression usi

ng both the associative and commutive properties of addition
Mathematics
2 answers:
Alexandra [31]3 years ago
6 0
A right parenthesis       )       is missing from this problem statement.  I'm assuming that you meant

<span>3 1/2+( 2+4 1/2).

There are at least two ways in which you could do this problem.  One would be to simply drop the parentheses entirely:

</span><span>3 1/2+ 2+4 1/2                It'd make sense to add 3 1/2 and 4 1/2 together FIRST, and then to add 2 to the result.

Or, do the work inside the parentheses FIRST:  </span><span>3 1/2+( 2+4 1/2).
</span>
This simplifies the problem to    <span>3 1/2+( 6 1/2).

You MUST get the same answer either way.</span>
Anettt [7]3 years ago
5 0

Step-by-step explanation:

This problem bothers on the use of mathematical properties

Given the expression

3 1/2+( 2+4 1/2)

Applying the associative property rule which says we can add or multiply regardless of how numbers are grouped

Associative property

3 1/2+( 2+4 1/2) can re re-written as

(3 1/2+2) +4 1/2

Commutative property

This rule states that the we can move (commute) figures about and still get same result.

Hence 3 1/2+( 2+4 1/2) can also be expressed as (2+4 1/2+3 1/2)

Or (4 1/2 +2+ 3 1/2)

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