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Describe the error in this computation (doing math) AND tell me how to fix the error by giving me the correct steps and solution

Describe the error in this computation doing math AND tell me how to fix the error by giving me the correct steps and solution class=

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Answer:

This person did not line up the decimals correctly. Therefor, he added incorrectly. We can fix the problem by lining the decimals correctly and starting from the right side to the left side.

Hope this helps!

oink21
The decimal points need to be lined up you can fix this be adding a zero to the end of 11.9 and 18.6 and your answer would be 42.75

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