exam Maths Puzzle Numerical Ability

Hi, I'm not sure if this is in the right category. I need to simplify the following: Thank you for your assistance!

1. 8(x + 4) - (x - 5)

2. 28((1/4)z + (1/7))

3. 3

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exam Other Question
Three consecutive even integers are such that the square of the third is 76 more than the square of the second. Find the three integers (x+6)(x-4)/x-1>0