Emesto tried to determine the solution for the system of
equations using substitution his work is shown below.
in which step did ernesto make the first error?
xy=7
step 1
step 2
step 3
step 4
3x - 2y = 8
step 1 x=y+7
step 2: 3y + 7) - 2y = 8
step 3: 3y + 7 - 2y = 8
step 4y+ 7 = 8
step 5: y = 1