Mathematics, 20.11.2021 14:00 natimike10

Ernesto 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 Ernesto make the first error?

Answers: 1

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Ernesto tried to determine the solution for the system of equations using substitution. His work is shown below. x – y = 73x – 2y = 8Step 1: x = y + 7Step 2: 3(y + 7) – 2y = 8Step 3: 3y + 7 – 2y = 8Step 4: y + 7 = 8Step 5: y = 1In which step did Ernesto make the first error?

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Another question on Mathematics

Ernesto 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 Ernesto make the first error?