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.

StepWorkReasoning

(−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)

Thanks For the Help In advance

Nickolas Jul 15, 2019

#1**+6 **

StepWorkReasoning

(−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)

heres what i done

−4.5 + 4.2 + 5.6 − 7.3

−4.5 + 4.2 + 5.6 + (−7.3)

−4.5 + (−7.3) + 4.2 + 5.6

(−4.5 + (−7.3)) + (4.2 + 5.6)

-11.8+9.8 = -2

The red is incorrect up top and corrected below

*Travisio*

travisio Jul 15, 2019

#2**+3 **

Thanks so instead of Having the two you put in red that you said were wrong have the one you said was correct instead of the two were wrong

so basically what I am saying is put the red one that you said was the correct answer in the spot were you said the two in red were the problem.

Nickolas
Jul 15, 2019