exam Maths Puzzle Numerical Ability

(1/5)-(14/x) How do I solve this?

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exam Other Question

Algebraically determine the exact roots of each quadratic equation. Express the roots in simplest form.
a) root3x^ - 2root6x = 2root3
b) root7x-2/root2x = root2x/root 7x+2
c)4/ ON a spinner there were 10 equal spaces.Each space had a different number.What is the probability of getting any particular number?

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