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Mathematics 16 Online
OpenStudy (anonymous):

−4.5 + 4.2 + 5.6 − 7.3 Original problem 1 −4.5 + 4.2 + 5.6 + (−7.3) Additive inverse 2 −4.5 + (−7.3) + 4.2 + 5.6 Commutative property 3 (−4.5 + (−7.3)) + (4.2 + 5.6) Associative property 4 −11.8 + 9.8 Simplify 5 −21.6 Simplify Is there any errors in these steps and dont forget to check if the properties are right.

OpenStudy (anonymous):

is it 7 times 3 or 7.3

OpenStudy (anonymous):

7.3

OpenStudy (anonymous):

k

OpenStudy (anonymous):

I got -2

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

but what are the errors. Thats my question.

OpenStudy (anonymous):

llike what properties are wrong? and which steps are wrong?

OpenStudy (mathstudent55):

I don't understand why the reason for step 1 is additive inverse. Was there a step before you are not showing? All other steps and reasons are good, except in the very last step, you did not add correctly -11.8 + 9.8

OpenStudy (mathstudent55):

-11.8 + 9.8 is the sum of a positive number and a negative number The result is not -21.6. It is -2

OpenStudy (anonymous):

so the only problem is in step 5? @mathstudent55

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