Question

решите неравенство Х-2<3х, 7х-13>9х

Answer 1

$1); ; ; x-2 textless 3x\\-2 textless 3x-x\\-2 textless 2x; ; ; to ; ; ; 2x textgreater -2\\x textgreater -1\\\2); ; ; 7x-13 textgreater 9x\\7x-9x textgreater 13\\-2x textgreater 13; |:(-2) textless 0\\x textless -6,5$