exam Maths Puzzle Numerical Ability

Hello,
Please help solve

2x-5y=-3
y=-4x+1
Thank you

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exam Other Question

How do you tell what is a rational number and a irational number? 8x-(4x-9)=73 & 8x=23+3(2x-5) & 2(x-3)-17=13-3(x+2) & (x+4)(x+1)=x^2+59 < for this problem it say to use foil to get rid of the quadratic(x^2) terms). and the last one is x(x+1)=(