exam Maths Puzzle Numerical Ability

x-8/x+5 / x-9/x+4

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exam Other Question

Solve.

The square root of x-1 = x-3

Can someone please explain this? Thank you.
Hello! I am having problems with a couple of problems and need some help.

Simplify: 50+ square root of 50 over 5

and also solve: Square root 5x+5 -15=0

Thank you for the help