exam Maths Puzzle Numerical Ability

I can not figure this out please help me. Thanks so much Place the following set of numbers in ascending order.


,5/9,1/8,,2/7

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exam Other Question
3x-4y=7
2x-y=3

then
3x-4y=7
-8x+4y=-12

adding

-5x=-5 then x=1 then 3-4y=7 then 4y=-4 then y=-1
Solution: x=1,y=-1 28.)√7(2√3+3√7)

50.)(18+√567)/9


I do not understand how to multiply and divide these two problems. Can I get some directions, please. You guys are s