1) 12х-13х>7-4 2} -4x-6x<-23-7
-1x>3 -10x<-30
x>3:[-1] x< 30:{-10}
x> 3 x<30
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1) 12х-13х>7-4 2} -4x-6x<-23-7
-1x>3 -10x<-30
x>3:[-1] x< 30:{-10}
x> 3 x<30