<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>
Округлить и получится 2500+2500
-41-95=-136
-59+11=-70
32+16=48
47-58=-11
13+27=40
-36-12=-48
-45+59=14