Помогите пож.решить: х+2/3+4-5х/4=-2; 6,5(2/13х-2)-3(1+1/3х)=1; 3*(2х-1)-5(7-х)=8(1-х)-3(х+5); (3-2х)*7=(-3х-1)*4;
(x+2)/3 + (4-5x)/4 = -2 |*12 4x+8 + 12-15x = -24 -11x=-44 x=4 3*(2x-1)-5(7-x)=8(1-x)-3(x+5) 6x-3-35+5x=8-8x-3x-15 11x-38=-11x-7 22x = 31 x=31/22 7(3-2x)=4(-3x-1) 21-14x=-12x-4 -2x = -25 x=12.5