Pls help! Error Analysis problem

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Mathias Hillmann asked Dec 20, 2022

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29 votes

Pls help! Error Analysis problem

Mathematics
middle-school

Mathias Hillmann asked Dec 20, 2022

by Mathias Hillmann

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17 votes

Answer:

Ana made a mistake from line 2 to 3

Explanation:

Balraj Ashwath answered Dec 23, 2022

by Balraj Ashwath

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8 votes

Answer:

Ana made a mistake from line 2 to 3

Explanation:

From line 2 to 3, on the left side, ana added 2 and 3 but completely ignored the - in front of the 3. the correct answer would have been -x - 21 = 3x + 19

Ruggs answered Dec 26, 2022

by Ruggs

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