exam Maths Puzzle Numerical Ability

I am having problems with this

Subtract: Express your answer in simplist form:
2/5-y/y-2

Thank you

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exam Other Question

the problem is area of a trapezoid solve b1 a=1/2h(b1+b2) One number is 11 less than another. If 10 times the smaller number minus 3 times the larger number is 30, find the two numbers.No book. Sorry. Thankyou!!!