16a+2y при a=1/8, y=- 1/6.
16 *1/8+2*(-1/6)=16/8-1/3=2-1/3=1 3/3-1/3=1 2/3.
16*1/8+2*(-1/6)=2+(-2/6)= 12/6-2/6=10/6=5/3=1 2/3