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HELP IM TIMED PLEASE Emesto 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: 3y + 7) – 2y = 8 Step 3: 3y + 7 – 2y = 8 Step 4: y + 7 = 8 Step 5: y = 1 in which step did Ernesto make the first error? A. step 1 B. Step 2 C. step 3 D. step 4
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