Question

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
Answer:

Answer 1

Answer:

step 2 is their first error

Step-by-step explanation:

they made the wrong calculations.

$20-26=-6$

$-6+9=-34 +60$

$3=-34+60$

all that's left to do is to add -34 and 60

$3=26$

they solved the left side of the equation and randomly subtracted 20 from the 60 and moved it to the left side. It was supposed to be -17. Then they moved -34 to the left side of the equation and added an x out of nowhere.