Ответ: (x+y/4)*O2+СхHу=x*СO2+(y/2)*H2Ox*(12+2*16)/7,7 = y/2*(2*1+16)/3,6x*(12+2*16)*36 = y/2*(2*1+16)*77x*(44)*36 = y/2*(18)*77x*4*2 = y/2*1*7x*16 = y*7C7Н16