exam
Maths Puzzle
Numerical Ability
6x+3y-2z=1
2x+y-3z=4
x-y+z=2
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exam Other Question
Simplify
(h^-2 - m^-2)/(m^-1 - h^-1)
find the area of an equilateral triangle whose perimeter is 12cm.
thank you for all your help! i just cant get this.