exam Maths Puzzle Numerical Ability

Which number does not make the number sentence 26 + y> 30 true?

A. 10 B. 4 c. 7 d. 100

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exam Other Question

First of all would like to thank you for you help,I would like to know is this consider a complex equation or number and how would i solved it algebraically,
5-2/x-6=10-2x/x-6..
simplify:

(x-5)(x^2-3x-2)