exam Maths Puzzle Numerical Ability

Hello out there,I need some help with some problems,the first one is,Solve the system of linear equations by graphing:4x-y=6 and 3x+y=1.The next one is,Determine whether the system

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(-8^1x^-56y^14z^-23)(4X^-47Y-32)
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16^-1Y^-36 it says draw pqr with pq=3 cm m(acute angle) p=35digrese m(acuteangle)q=70digrese