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You want to solve the following system of equations by addition. What should you do first, so that one variable is eliminated when you add

You want to solve the following system of equations by addition. What should you do first, so that one variable is eliminated when you add the equations?-2x+4y=103x-2y=-7A. Multiply the top equation by -3.B. Multiply the top equation by 3 and the bottom equation by -2.C. Multiply the top equation by 2 and the bottom equation by 3.D. Multiply the bottom equation by 2.

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