Question

2 ( 5x +1) < 3 ( 2x+ 1 ) -7 ( 5x -2)

Answer 1

2 (5x +1) < 3 (2x+1) -7 (5x-2)
10x +2 < 3(2x+1) -7 (5x-2)
10x +2 < 6x +3 -7 (5x-2)
10x +2 <6x +3 -35x +14
10x +2-2 <6x +3 -35x +14 -2
10x < 6x -6x +3 -35x +14 -2
-6x 10x < +3 -35x +35x +14 -2
+35x -6x 10x < +3 +14 -2
+29x 10x < +3 +14 -2
39x < +17 -2
39x < 15
x < 15 ÷3 5
----- = ------
39 ÷3 13

x < 5
----
13

Answer 2

Olá, boa noite ☺

Resolução:

2(5x+1)< 3(2x+1)-7(5x-2)

10x + 2 < 6x + 3 - 35x + 14.

10x - 6x + 35x < 3 + 14 - 2.

39x < 15.

x < 15/39 : 3/3 = 5/13.

x  < 5/13

Bons estudos :)