exam Maths Puzzle Numerical Ability

r-7/r-5=r-8/r+8

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exam Other Question

The population increase of Iraq is given by the equation:
A = Aoe^a.azst

where t is the years after 2003. What will be the population A of Iraq in 2020 if the population in 200 Solve the rational inequality and submit in interval notation:

x-2/x+1 > x/x+2

I know how to get to one fraction,
-3x+4/(x+2)(x+1)
Then it becomes (after setting equal to