book Maths Puzzle Numerical Ability

solve for x:
(y-1)/(y+4)=(y+1)/(y-2)

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book Other Question

if i am expecting $1,716,000 but earned $7,093,000 in terms of % how much did i exceed my expectations by? how to solve x+Y=5 pLEASE GIVE ME SOMEONE IN THE KANSAS CITY AREA THAT CAN GIVE ME FREE TUTOR I NEED HELP VERY BAD,