4 In the record books of Angorra, the following data was found: x - 2y = 6 ... Equation 1 -x + 4y = 6 Equation 2 Choose the most efficient approaches to solve the system given above. Add the equations. Multiply equation 1 by 2 and subtract the equations. Solve equation 1 for x and substitute the result in equation 2. Substitute -X + 4y for 6 in uatio

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