exam Maths Puzzle Numerical Ability

Solve the system of equations.

2x + y = 0

x - 3y + z = 0

3x + y - z = 0

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exam Other Question

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)=( Please help me solve this problem:

9. (10 pts) In a survey of 75 resorts, it was reported that:
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