<span>17−8.15/31+x+3.29/31=<span>16.14/31
</span></span><span><span>−8.15+17/x+31</span>+3.29/31=<span>16.14/31
</span></span><span><span>8.85/x+31</span>+3.29/31=<span>16.14/31
</span></span><span><span>8.85/x+31</span>+3.29/31=<span>16.14/31
</span></span><span><span>8.85/<span>x+31</span></span>+<span>329/3100</span>=<span>16.14/31
</span></span><span>x=−<span>2480/257</span></span>
207-98= 109см
703-69=634см
511 - х = 376,
х = 511 - 376,
х = 135,
проверка:
511 - 135 = 376,
376 = 376
40000+9000+8
60 000 000+7 000 000+800000+10000+3000+700+40+2