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Question

State, True or False :

(i) x<y  x>y

(ii) 5x15  x3

(iii) 2x7  2x474

(iv) 7>5  17<15


Solution

(i)muliplying both sides by a negative sign changes inequality symbol 
hence true

(ii)dividing both sides with a negative term changes inequality
true

(iii)same above concept applied hence true

(iv)reciprocating both sides changes inequality hence 
statement implied is true

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