Respuesta :
Answer:
First you subtract 122 from both side to get -2x=-40. Then, you divide both sides by -2 to get x=20. So, Jenny got 20 answers incorrect.
Answer:
There were 20 incorrect answers
Step-by-step explanation:
Given the equation, 122 - 2x = 82:
You can solve for x algebraically:
122 - 2x = 82
122 - 2x + 2x = 82 + 2x
122 = 82 + 2x
122 - 82 = 82 - 82 + 2x
40 = 2x
40/2 = 2x/2
20 = x
Therefore, she had 20 incorrect answers worth 2 points each (in which she lost a total of 40 points).