Номер 1177 а и б решение пж))
M/-7.2=5.3/3.6 m= - 5.3/3.6*7.2 m= - 5.3*2 m= - 10.6 (-7 1/4)/х =(9 2/3)/(3 1/3) х= - (7 1/4 * 3 1/3)/ (9 2/3) х= - 29/4*10/3*3/29 х= - 10/4= - 2 1/2