ST = 36, SR - RT = 4, SR, RT - ?

Пусть SR = x, тогда RT = x - 4. $$SR + RT = ST$$ $$x + x - 4 = 36$$ $$2x = 40$$ $$x = 20$$ SR = 20 RT = 20 - 4 = 16 Ответ: SR = 20, RT = 16