<span><span>75 ÷ 880 = 0.0852(27)</span><span><span>-75 880</span><span>70400.0852(27)</span><span> -4600</span><span> 4400</span><span> -2000</span><span> 1760</span><span> -2400</span><span> 1760</span><span> -6400</span><span> 6160</span><span> 24<span>0
</span></span></span></span>
Х+у=9
у*10+х=(х*10+у)-63
х=9-у
10у+х=10х+у-63
10у+9-у = 90-10у + у - 63
10у+9-у=27-9у
10у+9=27-8у
18у+9=27
18у=18
у=1
х=9-1=8
ответ: (8;1)