Question

Если c-a>8 и a-b>-7, то
a) c>b; б) c>a; и) c

Answer 1

$left { {{c-a textgreater 8} atop {a-b textgreater -7}} right. textless = textgreater left { {{c textgreater 8+a} atop {a textgreater -7+b}} right. = textgreater c textgreater 8-7+b=1+b textgreater b$