Задача 74: Выразите из данной формулы каждую переменную.

1) s = vt => v = s/t, t = s/v; 2) A = wt => w = A/t, t = A/w; 3) S = ab => a = S/b, b = S/a; 4) P = 2(a + b) => a = (P/2) - b, b = (P/2) - a; 5) V = abc => a = V/(bc), b = V/(ac), c = V/(ab); 6) a = bc + r => b = (a-r)/c, c = (a-r)/b, r = a - bc.