Mathematics, 18.12.2020 20:00 foreignlove1039

What is the first step to solve the following system of equations using substitution? X-y=-1
2x-y=3

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What is the first step to solve the following system of equations using substitution? X-y=-1 2x-y=3

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What is the first step to solve the following system of equations using substitution? X-y=-1
2x-y=3