Question

Arjun solved the equation 7·m=56 His work is shown. What error did Arjun make?

7·m=56
·7 ·7
m=392

Answer 1

He multiplied rather than dividing.


`\mathrm{Divide\:both\:sides\:by\:}7 \ \textgreater \ (7m)/(7)=(56)/(7) \ \textgreater \ Simplify \ \textgreater \ m = 8`

Hope this helps!

Answer 2

Answer: Multiplyng both sides by 7 instead of dividing both sides by 7.

Explanation:

Hi, by analyzing Arjun’s work, the mistake that he made was multiplying by 7 both sides instead of dividing both sides by seven.

The correct way is:

7m = 56

Dividing each both sides by 7

7m/7 = 56/7

m = 8

The real value of m is 8, not 392.

Feel free to ask for more if needed or if you did not understand something.