Mathematics Middle School

the following equation has been solved incorrectly. Explain the students error​

Answers

Answer 1
On the right side of the equation, when the student combined like terms, 7x and -4x, they did not combine them correctly. Instead of combining them correctly, the student forgot to include the sign of the -4x which caused the sum of the two terms to be 11x instead of 3x. Hope this helps!
Answer 2
What he said ^^ no problem

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