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Rezolvati inecuatiile :
x+7< sau egal 10
x+21< 4×6
x+3>11
13-x>5
VA ROG FRUMOS AJUTATI–MA!!!!
Dau coroana!!!


Răspuns :

x+7 < sau egal 10
x< sau egal 10-7
x< sau egal 3
x apartine {0,1,2,3}

x+21<4×6
x+21<24
x<24-21
x<3
x aparintine {0,1,2}

x+3>11
x>11-3
x>9
x apartine {10,11,12....}

13-x>5
x<13-5
x<8
x apartine {7,6,5,4,3,2,1,0}