2( 3х - 7 ) - 5х <= 3х - 11
6х - 14 - 5х <= 3х - 11
Х - 14 <= 3х - 11
2х >= - 3
Х >= - 1,5
Ответ [ - 1,5 ; + бесконечность)
3( 3х - 1 ) > 2( 5х - 7 )
9х - 3 > 10х - 14
Х < 11
Ответ ( - бесконечность; 11 )
<em>0.4*(6n-7)=0.5*(3n+7)</em>
<em>2.4n-2.8=1.5n+3.5</em>
<em>2.4n-1.5n=2.8+3.5</em>
<em>0.9n=6.3</em>
<em>n=6.3/0.9</em>
<em>n=63/9</em>
<em>n=7</em>
<em />
<em />
<span>1 - 4х = 2(х+2) + (4х-1)*3
</span>1 - 4х = 2х + 4 + 12х -3<span>
</span>-4х - 2х - 12х = 4 -3 -1<span>
-10х = 0
х = 0 </span>