exam Maths Puzzle Numerical Ability

I am trying to solve the following system: x+y =1 and x-y =1. thank you.

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exam Other Question

x - 2 divided by x - x over x + 3 A construction agency pay equipment operators $134 a day and general laborer $90 a day. If thirty two people were hired and the payroll was $3848 how may equipment operators were employed? How man general laborers?

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