Р*(-10)=15
р=15:(-10)
р=-1,5
(385 + 1892 ) : х = 638 2277 : х = 638 х = 2277 :638 х = 3 (остаток 363 )
3х+30
Х=30:3
Х=10 вот и все решение
<span>7 7/30 - (5 11/30 - Y ) =3 19/30</span>
<span>7 7/30- 3 19/30=5 11/30 - Y</span>
<span>5 11/30 - Y= 3 18/30</span>
Y=5 11/30-3 18/30
Y=1 23/30
<span> (X - 1 9/17) + 2 14/17=5 5 /17</span>
<span>X - 1 9/17=5 5 /17- 2 14/17</span>
<span>X - 1 9/17=2 8/17</span>
<span>X=2 8/17+1 9/17</span>
<span>X=3 17/17</span>
<span>X=4</span>