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Mathematics 11 Online
OpenStudy (anonymous):

j need help solving- Andrew is showing his work in simplifying −4.5 + 4.2 + 5.6 − 7.3. Identify any errors in his work or in his reasoning. Write feedback to Andrew explaining the mistake he made and how to correct his work. Step Work Reasoning −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

OpenStudy (anonymous):

What do you think is wrong here?

OpenStudy (anonymous):

Do you really think -11.8+9.8 = -21.6?

OpenStudy (anonymous):

i think that it should have been addition than subtraction for additive inverse @iambatman

OpenStudy (anonymous):

Yo Batman! Remember me? :D Missed ya

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