1. She made mistake in line c.
2. She added 12 on one side of the equation and subtracted 12 on other side when she was supposed to add 12 on both sides of the equation
Step-by-step explanation:
We will solve the given equation step by step to find her Mistake
[tex]8x-3(2x+4)=10[/tex]
a. Distribution property
[tex]8x-6x-12=10[/tex]
b. Simplifying
[tex]2x-12=10[/tex]
c. Adding 12 on both sides
[tex]2x-12+12=10+12[/tex]
d. Dividing both sides by 2
[tex]\frac{2x}{2}=\frac{22}{2}\\x=11[/tex]
By comparing her solution and our solution we can see that she made mistake in line c
So,
1. She made mistake in line c.
2. She added 12 on one side of the equation and subtracted 12 on other side when she was supposed to add 12 on both sides of the equation
Keywords: Linear Equation, Error
Learn more about linear equation at:
- brainly.com/question/3614284
- brainly.com/question/3783529
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