I NEED HELP Chuy tried to determine the solution for the system of equations using substitution. His work is shown below.

x – y = 7

3x – 2y = 8

Step 1: x = y + 7

Step 2: 3(y + 7) – 2y = 8

Step 3: 3y + 7 – 2y = 8

Step 4: y + 7 = 8

Step 5: y = 1

In which step did Chuy make the first error?

a

Step 1

b

Step 2

c

Step 3

d

Step 4

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