1) Б + 6 = А A - 6 = Б 6 = A - Б ............................................ 2) 6Н = M 6 = M : H H = M : 6 .............................................. 3) Z + 7 = T 7 = T - Z Z = T - 7 .................................................. 4) 8X = Y 8 = Y : X X = Y : 8
Спасибо!