matilda-wright_60bcd33484093
matilda-wright_60bcd33484093
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{ 2x + 3y = - 1 { x + 2z = - 3 { - z + 4y = - 2 x + 2z = - 3 => x = - 3 - 2z - z + 4y = - 2 => 4y = z - 2 => y = ( z - 2 )/4 2x + 3y = - 1 …