exam Maths Puzzle Numerical Ability

1-4w^2=w^2+11

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exam Other Question

y varies directly to x y=-9 and x=-12 if x=2 what does y= Solve the system of equations algebrically.
Eliminate the z variable.

2x-y+4z=-2
3x-2y-z=-3
x+4y+2z=17