Mathematics, 28.09.2020 14:01, dm21930

3. In what step is there first an error. Please explain the error, what misunderstandings the student has and how to correctly work the problem.
Given: 2(10 −13) +9 = −34 + 60
Step 1: 20 − 26 + 9 = −34 +60
Step 2: 17 = −34 +40
Step 3: 51x = 40
Step 4: =
40
51

Answers: 2

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3. In what step is there first an error. Please explain the error, what misunderstandings the student has and how to correctly work the problem. Given: 2(10 −13) +9 = −34 + 60 Step 1: 20 − 26 + 9 = −34 +60 Step 2: 17 = −34 +40 Step 3: 51x = 40 Step 4: = 40 51

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3. In what step is there first an error. Please explain the error, what misunderstandings the student has and how to correctly work the problem.
Given: 2(10 −13) +9 = −34 + 60
Step 1: 20 − 26 + 9 = −34 +60
Step 2: 17 = −34 +40
Step 3: 51x = 40
Step 4: =
40
51