Помогите с уравнением 64/70-x+26/70=5/70
64/70 - х + 26/70 = 5/70 64/70 - х = 5/70 - 26/70 64/70 - х = - 21/70 х = 64/70 - (- 21/70) х = 85/70 ----------------------------------- 64/70 - 85/70 + 26/70 = 5/70 - 21/70 + 26/70 = 5/70 5/70 = 5/70