<span>9•(7512-c)=34722</span>
<span>7512-с=34722:9</span>
<span>7512-с=3858</span>
<span>с=7512-3858</span>
<span>с=3654</span>
<span></span>
<span>8•a+4097=5081</span>
<span>8*а=5081-4097</span>
<span>8*а=984</span>
<span>а=984:8</span>
<span>а=123</span>
9*(7512-c)=34722
7512-с=34722:9
7512-с=3858
с=7512-3858
с=3654
8*a+4097=5081
8*а=5081-4097
8*а=984
а=984:8
а=123
Решение задания приложено