exam Maths Puzzle Numerical Ability

(4x2y-1)-2 squared
over
(3x-1y)

times

(2x-1y2)cubed
over
(9x-2y2)

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exam Other Question

Can you please help me with this problem?

Divide
(x^2-9y^2/7x^2-21y)/x^2+3xy

Thanks so much!
Solve each equation for Y.

y+1/2=-1/3(x+1/2)