<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>
√(3х+3) = х+1 ОДЗ: 3х+3≥0; x≥ -1
3х+3 = (х+1)²
3х+3 = х²+2х+1
х²-х-2 = 0
х₁+х₂ = 1
х₁*х₂ = -2
х₁ = 2
х₂ = -1
Ответ: -1; 2
1)0,11 x+0,08x=45,6
0,19x=45,6
x=45,6:0,19
x=240
2),2,9x-1,1x=5,04
1,8x=5,04
x=5,04:,1,8
x=2,8
Решение на фото)))))))))))