exam Maths Puzzle Numerical Ability

-2x <-8 and x-5 <5

please help

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I need help solving; ARE THESE SOLUTIONS FOR THE EQUATION?
2.5/2-5.-1=10
and 2.2-5.2/5=10

the fractions are throwing me off I think it's
NO FOR THE FIRST = 6.25 AND
THE SE y^2+10y+21/y^2+12y+35 please show me how to simplify this expression and how to set it up correctly