exam Maths Puzzle Numerical Ability

SOlve:

x 5
---- +1 = ----
x-5 x-5

This problem has no solution correct? Thank you for your help :-)

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exam Other Question

I need help in evaluating the following expressions: Thanks in advance.

1. 53 - 3(2^5 - 22)

2. (5 * 2)^3

3. 10 - 3*(8 - 6)

4. 5 - 2^3 1) x^2-13x+30=0
2) x^-0.7x-0.44=0
I never really understood how to solve qudratic equations which are equal to zero.