Сравните (>,<,=)<br> а+1098*1099+а а-(1360+300)*(а+300)-1400 (а+210)+390*а+500 (1000+а)-600*400+а
А+1098<1099+а<br>а-(1360+300)<(а+300)-1400<br>(а+210)+390>а+500 (1000+a)-600=400+a