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?
step 1 step 2 step 3 step 4