Question

The work of a student to solve a set of equations is shown:

Equation A: y = 4 – 2z
Equation B: 4y = 2 – 4z

Step 1: –4(y) = –4(4 – 2z) [Equation A is multiplied by –4.]
4y = 2 – 4z [Equation B]
Step 2: –4y = 4 – 2z [Equation A in Step 1 is simplified.]
4y = 2 – 4z [Equation B]
Step 3: 0 = 6 – 6z [Equations in Step 2 are added.]
Step 4: 6z = 6
Step 5: z = 1


In which step did the student first make an error? (5 points)



Step 1
Step 3
Step 4
Step 2

Answer 1

@Godlovesme

Answer 2

Give me a sec please

Answer 3

And can u screenshot it :)

Answer 4

idk how

Answer 5

http://www.take-a-screenshot.org

Answer 6

The work of a student to solve a set of equations is shown:

Equation A: y = 4 – 2z
Equation B: 4y = 2 – 4z

Step 1: –4(y) = –4(4 – 2z) [Equation A is multiplied by –4.]
4y = 2 – 4z [Equation B]
Step 2: –4y = 4 – 2z [Equation A in Step 1 is simplified.]
4y = 2 – 4z [Equation B]
Step 3: 0 = 6 – 6z [Equations in Step 2 are added.]
Step 4: 6z = 6
Step 5: z = 1

Answer 7

ok nvm what do u think the answer is?

Answer 8

step 2

Answer 9

sorry i was trying to find the right answer but i couldnt i guess it's 2 not sure thou :/ sorry

Answer 10

thank you

Answer 11

no problem :)