Mathematics, 26.05.2021 09:10, matt416760

2x+3y=1, -x+2y=-4 solve using substitution method -4x-6y=7, 4x+y=-2 solve using substitution method

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2x+3y=1, -x+2y=-4 solve using substitution method -4x-6y=7, 4x+y=-2 solve using substitution method...