Solve – 12x > 30, when

(i) x is a natural number. (ii) x is an integer.

It is given in the question that,

– 12x > 30


Dividing the inequality by -12 on both sides we get,



(i) When x is a natural integer.


It can be clearly observed that there is no natural number less thanbecause- is a negative number and natural numbers are positive numbers.


there would be no solution of the given inequality when x is a natural number.


(ii) When x is an integer


It can be clearly observed that the integer number less thanare…, -5, -4, -3


Thus, solution of– 12x > 30is …,-5, -4, -3, when x is an integer.


{…, -5, -4, -3} is the solution set.


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