Mathematics, 28.06.2019 10:30 kstyleszdance

Which is the best first step when solving the following system of equations? x+y=3 and 4x-y=7 i need answer asap a. multiply the first equation by 4. b. add the first equation to the second equation. c. multiply the second equation by -1 d. subtract the second equation from the first equation.

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Which is the best first step when solving the following system of equations? x+y=3 and 4x-y=7 i need...