exam Maths Puzzle Numerical Ability

solve for x
2/3x-7/2x=5

solve for y
8/5-y=7/y

solve for x
1/x^=1-1/4x

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exam Other Question

Adult tickets for a play cost $11 and child tickets cost $10. If there were 23 people at a performance and the theater collected $246 from ticket sales, how many children attended the play?

thanks Simplify : -2^0 + (16(^5/4))/(125^-2/3) I think the answer is 801 or 799??? Can someone please help me ??