1) 5х+х-7х=-8/9+10/6
-х=-2/3
х=2/3
второй не понятно записано
При х=6/11 6/11+3/11=9/11 9/11+1/11=10/11 10/11-7/11=3/11 меньше1 3/11+1 3/11=1 6/11
при х=14/11 14/11+3/11=17/11 17/11+1/11=18/11 18/11-7/11=11/11=1 равно1 1-3/10=7/10
при х=4/11 4/11+3/11=7/11 7/11+1/11=8/11 8/11-7/11=1/11 меньше1 1/11+1 3/11=1 4/11 1 4/11+2=3 4/11
при х=3/11 3/11+3/11=6/11 6/11+1/11=7/11 7/11-7/11=0 меньше1 1 3/11+2=3 3/11
при х=1 7/11 1 7/11+3/11=1 10/11 1 10/11+1/11=1 11/11=2 больше1 2-7/11=22/11-7/11=15/11 15/11-1=4/11 4/11+3 2/11=3 6/11
54 = 2 * 3 * 3 * 3
108 = 2 * 2 * 3 * 3 * 3
162 = 2 * 3 * 3 * 3 * 3
378 = 2 * 3 * 3 * 3 * <span>7
</span>2 * 3 * 3 * 3<span> = </span><span>54
</span>
НОД (54 <span>; </span>108 <span>; </span>162 <span>; </span>378<span>) =54</span>
1) 40000-8000=32000 тетради в клетку
2) 32000:100=320 пачек