<span><span>3952/280
</span><span>280 /14.1(142857)
------
</span><span>-1152
</span><span>1120</span><span>
--------
-320</span><span>
280
---------
</span><span>-400</span><span>
280</span><span>
-----------
-1200</span><span>
1120</span><span>
----------
-800</span><span>
560</span><span>
-----------
-2400</span><span>
2240</span><span>
----------
-1600</span><span>
1400</span><span>
----------
-2000</span><span>
1960</span><span>
---------------
4<span>0
</span></span></span>
1)7573+1427=8000. 2)8000-6294=1706.
5(2х+17)=5-4(1,6-0,7)
10х+85=5-4*0,9
10х+85=5-3,6
10х+85=1,4
10х=1,4-85
10х=-83,6
х=-83,6:10
х=-8,36
Ответ: -8,36
7+3=10 прочитал в апреле
10+7=17 прочитал за 2 месяца