1) -5(-1+х)+3х≥ -7
5-5x+3x≥ -7
-2x≥ -7-5
-2x≥ -12
x≤ -12/(-2)
x≤ 6
2) 9x-5(-7+4x)>-9x+10
9x+35-20x>-9x+10
-11x+35>-9x+10
-11x+9x>10-35
-2x>-25
x< -25/(-2)
x<12.5<br>
3) -x+3(-7-5x)>7x+7
-x-21-15x>7x+7
-16x-21>7x+7
-16x-7x>7+21
-23x>28
x< 28/(-23)
x< - 1 ⁵/₂₃
4) 6x+3(-5-8x)>2x+4
6x-15-24x>2x+4
-18x-15>2x+4
-18x-2x>4+15
-20x>19
x<19/(-20)<br>x< -19/20