Решите уравнение x-1/2=3/4x
1) Х-1/2=3/4Х ; Х-3/4Х=1/2; 4/4Х-3/4Х=1/2;1/4Х=1/2;Х=1/2:1/4;Х=1/2*4/1;Х=4/2;х=2.