Eliminating z from x + 2y + 3z = ,2 3x + 2y + z3 = 6 and 5 2x + 3y = gives x + 2y = 2. Justify your answers. (This means that if you think a statement is false, give a short proof or an example that shows it is false. If it is true, give a short proof for saying so
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Do z3 means z^3
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from the 1st equation take everything to the rhs and lrave z in lhs
substitute z with the value in the second equation.
hope you would get what is needed.
substitute z with the value in the second equation.
hope you would get what is needed.
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