book Maths Puzzle Numerical Ability

what is 5/9 minus 3/8?

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book Other Question

the diagram vxy represent a right open ended paper cone.the slant heght vx is 14cm ,the base diameter xy is 21cm and vo is the height of the cone.what is the crcumference of the b determine whether the given ordered pair is a solution of the system of equations.

#1

(4,2); x-y=2
x+y=6

#2

(-8,-7); x-2y=6
2x-3y=5