*************************************
14 021 : 7 - 8 * 150 = 803
1) 14 021 : 7 = 2 003
2) 8 * 150 = 1 200
3) 2 003 - 1 200 = 803
*************************************
х²+1≠0, т.к. х²≥0 для любого х и 1>0
x-1=0
x=1
Ответ: 1
220,8:33 1/3=2208/10*3/100=6,624
(13479+16397):(1276-968)=29876:308=97
(14374-13389)·(9300:372)=985·25=24625