Mathematics, 17.07.2020 20:01 aileenf598
Ernesto 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?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
Answers: 2
Mathematics, 21.06.2019 16:50, Chartwig4831
For the equations below which statement is true ? -2x=14 6x=-42
Answers: 1
Ernesto tried to determine the solution for the system of equations using substitution. His work is...
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