Решите уровнения 5,4(3y-2)-7,2(2y-3)=1,2 

5,4(3y-2)-7,2(2y-3)=1,2; 16,2y-10,8-14,4y+21,6=1,2; 1,8y+10,8=1,2; 1,8y=-9,6; y=-16/3; y=-5⅓  

5,4(3y-2)-7,2(2y-3)=1,2 5.4*3y-5.4*2-7.2*2y+7.2*3=1.2 16.2y-10.8-14.4y+21.6=1.2 1.8y+10.8=1.2 1.8y=1.2-10.8 1.8y=-9.6 y=-9.6/1.8 y=-5целых и 1/3