Answered

Math 7 Grade 7


I need help with this question. Find the Error.


Raul is solving -6x = 72. Find his mistake and correct it.



Find his mistake.


Here is what Raul said : -6 x / 6 = 72/6

x = 12


I need an explanation for his mistake.


Show the correct way it should have been done. Also show the correct answer.

Verified Answer :

Porshia

-6x= 72
You are supposed to divide both sides by -6 and not just 6. That was Raul's mistake
-6x/-6= 72/-6
X= -12

Raul's mistake was that he divided by +6 instead of -6. He should have divided by -6 so that the x would be positive. 

Correct Work: 
-6x=72
-6x/-6=72/-6
x=-12


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