Mathematics, 18.12.2020 21:10, hhomeschool24

What is the first step to solve the following system of equations using substitution? X-y=-1
2x-y=3
A.) Solve the first equation for x.
B.) Divide the second equation by 2.
C.) Multiply the first equation by 2.
D.) Add the two equations together.

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What is the first step to solve the following system of equations using substitution? X-y=-1
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