exam Maths Puzzle Numerical Ability

-2/3(6/5x-7/10)=17/20
help me please.

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exam Other Question

Simplify:
(16-x^2) / (x^3-2x^2-8x) My study question asks....Solve the following systems of equation by any method.

All I am asking for is the name of a method so I can look up the order or way to solve it.

3x-2y=12

and

2x+y=8

Thanks!