4 years ago

A student provided the steps for solving an equation. Which statement describes the error in the solution?

1 answer:

8 0

The answer for the exercise shown above is the second option, the option B, which is: B. In step 3, the addition property of equality was applied incorrectly.

The explanation is:

To solve this problem you must apply the proccedure shown below:. You have the followinwg equation:

4(m-3)+5(m+2)=m+9

Let's review the steps:

4m-12+5m+10=m+9 (step 1)
9m-2=m+9 (step 2)
8m =7 (step 3) (There is a mistake, because: 9m-m=9+2⇒8m=11)
 m=11/8 This should be the step 4

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