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

Equation 1: m = 6 + n
Equation 2: 2m = 8 + 8n

Step 1: –2(m) = –2(6 + n)
2m = 8 + 8n

Step 2: –2m = –12 – 2n
2m = 8 + 8n

Step 3: –12 – 2n = 8 + 8n

Step 4: –20 = 10n

Step 5: n = –2

In which step did the student first make an error? (4 points)

Step 2
Step 3
Step 4
Step 5

Question

The work of a student to solve a set of equations is shown below:

Equation 1: m = 6 + n
Equation 2: 2m = 8 + 8n

Step 1:  	–2(m) =  	–2(6 + n)
 	2m =  	8 + 8n
 
Step 2:  	–2m =  	–12 – 2n
 	2m =  	8 + 8n
 
Step 3:  	–12 – 2n =  	8 + 8n
 
Step 4:  	–20 =  	10n
 
Step 5:  	n =  	–2


In which step did the student first make an error? (4 points)

 
 	
	Step 2
	Step 3
	Step 4
	Step 5

anonymous · Answer

@Godlovesme

anonymous · Answer

i think  its step 2

godlovesme · Answer

Im soo sorry I was afk :/
Just give me one sec

anonymous · Answer

its ok

godlovesme · Answer

Im not sure but I think it's 3 :/

anonymous · Answer

ok thank you

anonymous · Answer

i have one more i need checked is that ok ??

godlovesme · Answer

Sure thing :) but I can't stay for another just one more sorry tho :(

anonymous · Answer

A student is trying to solve the system of two equations given below:

Equation P: x + y = 8
Equation Q: 2x + 5y = 24

Which of the following steps can be used to eliminate the x term? (4 points)

 
 	
	2(x + y = 8)
	–2(x + y = 8)
	–1(2x + 5y = 24)
	–2(2x + 5y = 24)

anonymous · Answer

@Godlovesme

anonymous · Answer

i only have this one then im done