Respuesta:
3x+6x>4+5
9x>9
x>9
3x-21<-10x-45
3x+10x< 21-45
7x< 24
x<24÷7
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Respuesta:
3x+6x>4+5
9x>9
x>9
3x-21<-10x-45
3x+10x< 21-45
7x< 24
x<24÷7