Решите уравнения
1) 3(0.4х+7)-4(0,8х-3)=2 2)4,5(7/15x+2/9)-0,77(8/11x-3/7)=-1,75

1) 3(0.4х+7)-4(0,8х-3)=2 1,2x+21-3,2x+12=2-2x+33=2-2x=2-33-2x=-31x=31:2x=15,52)4,5(7/15x+2/9)-0,77(8/11x-3/7)=-1,752,1x + 1 - 0,56x + 0,33 = -1,751,54x +1,33 = -1,751,54x = -1,75 - 1,331,54x = -3,08x = -3,08 : 1,54 x = -2