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4 years ago

8

Which error, if any, was made?

2 answers:

Ksivusya [100]4 years ago

8 0

2x-8=12
First you add 8 to both sides...
2x = 20
Then you divide each side by 2...
x = 20
Done

Wrong things...
- did not do the same thing to the entire side of each side
- wrong multiplication choice

LiRa [457]4 years ago

6 0

$2x-8=12\ \ \ \ |\cdot\dfrac{1}{2}\\\\\left(\dfrac{1}{2}\right)2x-\left(\dfrac{1}{2}\right)8=12\ \ \ |\text{here you have the mistake}\\\\\\\boxed{\text{The multiplication property of equality was not applied correctly.}}$

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