Mathematics, 16.11.2019 05:31 GreenHerbz206
Shena made a table to show the steps and algebraic properties used to write an equivalent expression for 3x-5+7x+6.
step
1
2
3
4
expression3x-5+7x + 6
3x+7x+6-5
(3x+7x)+(6-5)
(3+7)+(6-5)
10x+1
1
property
commutative property
distributive property
distributive property
addition property
what error did shena make?
shena should have written the associative property for step 1.
shena should have written the associative property for step 2.
shena should have written the associative property for step 3.
shena should have written the associative property for step 4.
Answers: 1
So, we can use this property to rewrite the expression 
as 
This means we can put brackets to determine convinient order of operations. Here, in step 2, Shena should use associative property to get
So,
and 
so
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Shena made a table to show the steps and algebraic properties used to write an equivalent expression...
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