Question

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

Equation 1: m = 8 + 2n
Equation 2: 4m = 4 + 4n





Step 1:

−4(m) =

−4(8 + 2n)





4m =

4 + 4n







Step 2:

−4m =

−32 − 8n





4m =

4 + 4n







Step 3:

−4m + 4m =

−32 − 8n + 4n







Step 4:

0 =

−32 − 4n







Step 5:

n =

− 8



In which step did the student first make an error?

Answer 1

@olivier008 can you help me with this one please?

Answer 2

looks like step 3 he has forgotton to compute the +4 which would result in -28

Answer 3

thatnk you agian!:)

Answer 4

thank*