Question

1) 3,3 x 0,4(4 - 3x) ≤ 9,3
2) 9(0,5 y + 1)-3.1(1-y)> 5.9 + 7.2 y:
3) 0,6( a - 2) - 0,22 0,8( a + 2) + 3,5;
4) -1.4 +0,5(11 b-2)<-5,5 b + 1.6:
4
5) 5+ (14x - 3) > (18x - 2):
6)
7
(7+9y) ≤ 14-(5-8).

Answer 1

Ответ:

1 )

3, 3x + 0, 4(4 - 3x) <= 9, 3 + 5(0.7 - x) ;

3, 3x - 1, 6 + 1, 2x <= 9, 3 + 3, 5 - 5x

3, 3x + 1, 2x + 5x <= 9, 3 + 3, 5 + 1, 6

9, 5x <= 14, 4 x <= 14, 4/9, 5

x <= 144/95 x <= 1 49/95

Ответ: (- ∞; 1 49/95]

2)

9(0, 5y + 1) - 3, 1(1 - y) > 5, 9 + 7, 2y

4, 5y + 3, 1y - 7, 2y > 5, 9 + 3 ,1-! ;

4, 5y + 9 - 3, 1 + 3, 1y > 5, 9 + 7, 2y

0, 4y > 0 ; y > 0/0, 4

y > 0

Ответ: (0; +∞)